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<!DOCTYPE html> <html class='v2 list-page' dir='ltr' itemscope='' itemtype='http://schema.org/Blog' lang='en' xmlns='http://www.w3.org/1999/xhtml' xmlns:b='http://www.google.com/2005/gml/b' xmlns:data='http://www.google.com/2005/gml/data' xmlns:expr='http://www.google.com/2005/gml/expr'> <head> <link href='https://www.blogger.com/static/v1/widgets/3566091532-css_bundle_v2.css' rel='stylesheet' type='text/css'/> <title> Chromium Blog: webp </title> <meta content='width=device-width, height=device-height, initial-scale=1.0' name='viewport'/> <meta content='IE=Edge' http-equiv='X-UA-Compatible'/> <meta content='Chromium Blog' property='og:title'/> <meta content='en_US' property='og:locale'/> <meta content='https://blog.chromium.org/search/label/webp' property='og:url'/> <meta content='Chromium Blog' property='og:site_name'/>  <meta content='Chromium Blog' property='og:title'/> <meta content='summary' name='twitter:card'/> <meta content='@ChromiumDev' name='twitter:creator'/> <link href='https://fonts.googleapis.com/css?family=Roboto:400italic,400,500,500italic,700,700italic' rel='stylesheet' type='text/css'/> <link href='https://fonts.googleapis.com/icon?family=Material+Icons' rel='stylesheet'/> <script src='https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js' type='text/javascript'></script>  <style id='page-skin-1' type='text/css'></style> <style id='template-skin-1' type='text/css'></style>  <meta content='text/html; 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} #sidebar-bottom { background: #f5f5f5; border-top:1px solid #eee; } #sidebar-bottom .widget { border-bottom: 1px solid #e0e0e0; padding: 15px 0; text-align: center; } #sidebar-bottom > div:last-child { border-bottom: 0; } #sidebar-bottom .text { line-height: 20px; } /* Home, forward, and backward pagination. */ .blog-pager { border-top : 1px #e0e0e0 solid; padding-top: 10px; margin-top: 15px; text-align: right !important; } #blog-pager { margin-botom: 0; margin-top: -14px; padding: 16px 0 0 0; } #blog-pager a { display: inline-block; } .blog-pager i.disabled { opacity: 0.2 !important; } .blog-pager i { color: black; margin-left: 16px; opacity: 0.54; } .blog-pager i:hover, .blog-pager i:active { opacity: 0.87; } #blog-pager-older-link, #blog-pager-newer-link { float: none; } .gplus-profile { background-color: #fafafa; border: 1px solid #eee; overflow: hidden; width: 212px; } .gplus-profile-inner { margin-left: -1px; margin-top: -1px; } /* Sidebar follow buttons. */ .followgooglewrapper { padding: 12px 0 0 0; } .loading { visibility: hidden; } .detail-page .post-footer .cmt_iframe_holder { padding-top: 40px !important; } /** Desktop **/ @media (max-width: 900px) { .col-right { display: none; } .col-main { margin-right: 0; min-width: initial; } .footer-outer { display: none; } .cols-wrapper { min-width: initial; } .google-footer-outer { background-color: #f5f5f5; } } /** Tablet **/ @media (max-width: 712px) { .header-outer, .cols-wrapper, .footer-outer, .google-footer-outer { padding: 0 40px; } } /* An extra breakpoint accommodating for long blog titles. */ @media (max-width: 600px) { .header-left { height: 100%; position: initial; top: inherit; margin-top: 0; -webkit-transform: initial; transform: initial; } .header-title { margin-top: 18px; } .header-inner { height: auto; margin-bottom: 32px; margin-top: 32px; } .header-desc { margin-top: 12px; } .header-inner .google-logo { height: 70px; margin-top: 3px; } .header-inner .google-logo img { height: 70px; } .header-title h2 { font-size: 32px; line-height: 76px; } } /** Mobile/small desktop window; also landscape. **/ @media (max-width: 480px), (max-height: 480px) { .header-outer, .cols-wrapper, .footer-outer, .google-footer-outer { padding: 0 16px; } .cols-wrapper { margin-top: 0; } .post-header .publishdate, .post .post-content { font-size: 16px; } .post .post-content { line-height: 28px; margin-bottom: 30px; } .post { margin-top: 30px; } .byline-author { display: block; font-size: 12px; line-height: 24px; margin-top: 6px; } #main .post .title a { font-weight: 500; color: #4c4c4c; color: rgba(0,0,0,.70); } #main .post .post-header { padding-bottom: 12px; } #main .post .post-header .published { margin-bottom: -8px; margin-top: 3px; } .post .read-more { display: block; margin-top: 14px; } .post .tr-caption { font-size: 12px; } #main .post .title a { font-size: 20px; line-height: 30px; } .post-content iframe { /* iframe won't keep aspect ratio when scaled down. */ max-height: 240px; } .post-content .separator img, .post-content .tr-caption-container img, .post-content iframe { margin-left: -16px; max-width: inherit; width: calc(100% + 32px); } .post-content table, .post-content td { width: 100%; } #blog-pager { margin: 0; padding: 16px 0; } /** List page tweaks. **/ .list-page .post-original { display: none; } .list-page .post-summary { display: block; } .list-page .comment-container { display: none; } .list-page #blog-pager { padding-top: 0; border: 0; margin-top: -8px; } .list-page .label-footer { display: none; } .list-page #main .post .post-footer { border-bottom: 1px solid #eee; margin: -16px 0 0 0; padding: 0 0 20px 0; } .list-page .post .share { display: none; } /** Detail page tweaks. **/ .detail-page .post-footer .cmt_iframe_holder { padding-top: 32px !important; } .detail-page .label-footer { margin-bottom: 0; } .detail-page #main .post .post-footer { padding-bottom: 0; } .detail-page #comments { display: none; } } [data-about-pullquote], [data-is-preview], [data-about-syndication] { display: none; } </style> <noscript> <style> .loading { visibility: visible }</style> </noscript> <script type='text/javascript'> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); 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//]]> </script> <noscript> <img alt='' height='1' src='https://ad.doubleclick.net/ddm/activity/src=2542116;type=gblog;cat=googl0;ord=1?' width='1'/> </noscript>  <div class='header-outer'> <div class='header-inner'> <div class='section' id='header'><div class='widget Header' data-version='1' id='Header1'> <div class='header-left'> <div class='header-title'> <a class='google-logo' href='https://blog.chromium.org/'> <img alt="Chromium Blog" height="50" src="//1.bp.blogspot.com/-vkF7AFJOwBk/VkQxeAGi1mI/AAAAAAAARYo/57denvsQ8zA/s1600-r/logo_chromium.png"> </a> <a href='/.'> <h2> Chromium Blog </h2> </a> </div> <div class='header-desc'> News and developments from the open source browser project </div> </div> </div></div> </div> </div>  <div class='cols-wrapper loading'> <div class='col-main-wrapper'> <div class='col-main'> <div class='section' id='main'><div class='widget Blog' data-version='1' id='Blog1'> <div class='post' data-id='2046955108317543877' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2013/03/data-compression-in-chrome-beta-for.html' itemprop='url' title='Data Compression in Chrome Beta for Android'> Data Compression in Chrome Beta for Android </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Tuesday, March 5, 2013 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Today’s Chrome Beta for Android <a href="http://chrome.blogspot.com/2013/03/type-less-when-youre-on-go.html">update</a> brings your saved passwords and autofill entries from your desktop to your phone and tablet. This release also introduces an experimental data compression feature that will yield substantial bandwidth savings. This feature is powered by a connection to a <a href="http://www.chromium.org/spdy">SPDY</a> proxy running on Google’s servers, paired with content optimization performed by our <a href="https://developers.google.com/speed/pagespeed/">open-source PageSpeed libraries</a>, specifically tuned for Chrome Beta on Android.<br /> <br /> By using SPDY, the proxy is able to multiplex multiple request and response streams in parallel over a single TCP connection to your phone or tablet. When this new feature is enabled (enable the “Experimental Data Compression Proxy” under <span style="font-family: Courier New, Courier, monospace;">chrome://flags</span>) the browser-to-proxy connection is over SSL, for a more secure browsing experience. In addition, only HTTP traffic is routed through and optimized by the proxy, so secure (HTTPS) requests will bypass the proxy and continue to connect directly to the destination. Furthermore, DNS lookups are performed by the proxy, instead of on the mobile device. Turning on this experimental feature also enables <a href="http://blog.chromium.org/2012/01/all-about-safe-browsing.html">Safe Browsing</a>.<br /> <br /> For an average web page, over 60% of the transferred bytes are images. The proxy optimizes and transcodes all images to the <a href="https://developers.google.com/speed/webp/">WebP format</a>, which requires fewer bytes than other popular formats, such as JPEG and PNG. The proxy also performs intelligent compression and minification of HTML, JavaScript and CSS resources, which removes unnecessary whitespace, comments, and other metadata which are not essential to render the page. These optimizations, combined with mandatory gzip compression for all resources, can result in substantial bandwidth savings.<br /> <br /> For a deeper dive into the technical details, check out our <a href="https://developers.google.com/chrome/mobile/docs/data-compression">whitepaper</a> in Chrome for Android’s developer documentation. The latest version of Chrome Beta for Android is available on <a href="https://play.google.com/store/apps/details?id=com.chrome.beta">Google Play</a> (use the link, you won't find it in search)! We look forward to your early <a href="https://code.google.com/p/chromium/issues/entry?template=Android%20Issue">feedback</a>.<br /> <br /> <span class="post-author">Posted by Matt Welsh, Software Engineer & Mobile Web Performance Gearhead </span> <br /> <br /> <i>Update April 10, 2013:</i> To enable this experimental data compression feature, go to “Bandwidth Management” in Settings and enable “Reduce Data Usage.” From the most recent Chrome Beta for Android <a href="http://chrome.blogspot.com/2013/04/more-immersive-mobile-web.html">release</a> onwards, no need to look under <span style="font-family: Courier New, Courier, monospace;">chrome://flags</span>. <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Today’s Chrome Beta for Android <a href="http://chrome.blogspot.com/2013/03/type-less-when-youre-on-go.html">update</a> brings your saved passwords and autofill entries from your desktop to your phone and tablet. This release also introduces an experimental data compression feature that will yield substantial bandwidth savings. This feature is powered by a connection to a <a href="http://www.chromium.org/spdy">SPDY</a> proxy running on Google’s servers, paired with content optimization performed by our <a href="https://developers.google.com/speed/pagespeed/">open-source PageSpeed libraries</a>, specifically tuned for Chrome Beta on Android.<br /> <br /> By using SPDY, the proxy is able to multiplex multiple request and response streams in parallel over a single TCP connection to your phone or tablet. When this new feature is enabled (enable the “Experimental Data Compression Proxy” under <span style="font-family: Courier New, Courier, monospace;">chrome://flags</span>) the browser-to-proxy connection is over SSL, for a more secure browsing experience. In addition, only HTTP traffic is routed through and optimized by the proxy, so secure (HTTPS) requests will bypass the proxy and continue to connect directly to the destination. Furthermore, DNS lookups are performed by the proxy, instead of on the mobile device. Turning on this experimental feature also enables <a href="http://blog.chromium.org/2012/01/all-about-safe-browsing.html">Safe Browsing</a>.<br /> <br /> For an average web page, over 60% of the transferred bytes are images. The proxy optimizes and transcodes all images to the <a href="https://developers.google.com/speed/webp/">WebP format</a>, which requires fewer bytes than other popular formats, such as JPEG and PNG. The proxy also performs intelligent compression and minification of HTML, JavaScript and CSS resources, which removes unnecessary whitespace, comments, and other metadata which are not essential to render the page. These optimizations, combined with mandatory gzip compression for all resources, can result in substantial bandwidth savings.<br /> <br /> For a deeper dive into the technical details, check out our <a href="https://developers.google.com/chrome/mobile/docs/data-compression">whitepaper</a> in Chrome for Android’s developer documentation. The latest version of Chrome Beta for Android is available on <a href="https://play.google.com/store/apps/details?id=com.chrome.beta">Google Play</a> (use the link, you won't find it in search)! We look forward to your early <a href="https://code.google.com/p/chromium/issues/entry?template=Android%20Issue">feedback</a>.<br /> <br /> <span class="post-author">Posted by Matt Welsh, Software Engineer & Mobile Web Performance Gearhead </span> <br /> <br /> <i>Update April 10, 2013:</i> To enable this experimental data compression feature, go to “Bandwidth Management” in Settings and enable “Reduce Data Usage.” From the most recent Chrome Beta for Android <a href="http://chrome.blogspot.com/2013/04/more-immersive-mobile-web.html">release</a> onwards, no need to look under <span style="font-family: Courier New, Courier, monospace;">chrome://flags</span>. <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Data Compression in Chrome Beta for Android&url=https://blog.chromium.org/2013/03/data-compression-in-chrome-beta-for.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2013/03/data-compression-in-chrome-beta-for.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2013/03/data-compression-in-chrome-beta-for.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/mobile' rel='tag'> mobile </a> , <a class='label' href='https://blog.chromium.org/search/label/spdy' rel='tag'> spdy </a> , <a class='label' href='https://blog.chromium.org/search/label/ssl' rel='tag'> ssl </a> , <a class='label' href='https://blog.chromium.org/search/label/webp' rel='tag'> webp </a> </span> </div> </div> </div> <div class='post' data-id='3059758383244581457' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2013/02/using-webp-to-improve-speed.html' itemprop='url' title='Using WebP to Improve Speed'> Using WebP to Improve Speed </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Thursday, February 7, 2013 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> Since speed is critical for a good experience when using the web, at Google we’re always exploring ways to make the web faster. As it turns out, one of the biggest bang-for-the-buck ways to do that is by replacing JPEG and PNG images with <a href="https://developers.google.com/speed/webp/">WebP</a>. WebP offers significantly better compression than these legacy formats (around <a href="https://developers.google.com/speed/webp/docs/webp_study">35% better</a> in most cases), and when you consider that <a href="http://httparchive.org/">over 60%</a> of typical page sizes are images, the benefits can be substantial. WebP translates directly into less bandwidth consumption, decreased latency, faster page loads, better battery consumption on mobile, and overall happier users.<br /> <br /> Case in point: the <a href="http://chrome.google.com/webstore">Chrome Web Store</a> uses many large promotional images and tiles on its home page, making it a very heavyweight page. The team was eager to find ways to improve its speed, without sacrificing the user experience or giving up image quality. WebP to the rescue!<br /> <br /> By converting PNGs and JPEGs to WebP, the Chrome Web Store was able to reduce image sizes by about 30% on average (here’s one sample image in <a href="https://lh3.googleusercontent.com/fUsv0xMv9IQEbIFD5Goqq15z3Ckg24lVGECFyRuqUVWD5NQbWm0FHQMHYDWuCcRsuGAf5IPBkg=s460-h340-e365-rw">WebP</a> at 8.3kB and <a href="https://lh3.googleusercontent.com/fUsv0xMv9IQEbIFD5Goqq15z3Ckg24lVGECFyRuqUVWD5NQbWm0FHQMHYDWuCcRsuGAf5IPBkg=s460-h340-e365">JPEG</a> at 32kB). Given the number of requests Chrome Web Store serves, this adds up to <i>several terabytes</i> of savings every day.<br /> <br /> For users, the rubber meets the road when it comes to how fast the page loads though. On this score, with WebP we were able to reduce average home page load time by nearly one-third — a huge benefit for our users.<br /> <br /> To implement WebP, the team first added transcoding support to the image request pipeline; then at runtime the site checks whether the client browser supports WebP and requests the WebP version for each image when it does. The effort to implement it turned out to be not much work for a lot of benefit.<br /> <br /> To find out more about how you can make your site faster, visit our <a href="https://developers.google.com/speed/">Make the Web Faster</a> site and dive into <a href="https://developers.google.com/speed/webp/">WebP</a>. <br /> <br /> <span class="post-author">Posted by Stephen Konig, Product Manager </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> Since speed is critical for a good experience when using the web, at Google we’re always exploring ways to make the web faster. As it turns out, one of the biggest bang-for-the-buck ways to do that is by replacing JPEG and PNG images with <a href="https://developers.google.com/speed/webp/">WebP</a>. WebP offers significantly better compression than these legacy formats (around <a href="https://developers.google.com/speed/webp/docs/webp_study">35% better</a> in most cases), and when you consider that <a href="http://httparchive.org/">over 60%</a> of typical page sizes are images, the benefits can be substantial. WebP translates directly into less bandwidth consumption, decreased latency, faster page loads, better battery consumption on mobile, and overall happier users.<br /> <br /> Case in point: the <a href="http://chrome.google.com/webstore">Chrome Web Store</a> uses many large promotional images and tiles on its home page, making it a very heavyweight page. The team was eager to find ways to improve its speed, without sacrificing the user experience or giving up image quality. WebP to the rescue!<br /> <br /> By converting PNGs and JPEGs to WebP, the Chrome Web Store was able to reduce image sizes by about 30% on average (here’s one sample image in <a href="https://lh3.googleusercontent.com/fUsv0xMv9IQEbIFD5Goqq15z3Ckg24lVGECFyRuqUVWD5NQbWm0FHQMHYDWuCcRsuGAf5IPBkg=s460-h340-e365-rw">WebP</a> at 8.3kB and <a href="https://lh3.googleusercontent.com/fUsv0xMv9IQEbIFD5Goqq15z3Ckg24lVGECFyRuqUVWD5NQbWm0FHQMHYDWuCcRsuGAf5IPBkg=s460-h340-e365">JPEG</a> at 32kB). Given the number of requests Chrome Web Store serves, this adds up to <i>several terabytes</i> of savings every day.<br /> <br /> For users, the rubber meets the road when it comes to how fast the page loads though. On this score, with WebP we were able to reduce average home page load time by nearly one-third — a huge benefit for our users.<br /> <br /> To implement WebP, the team first added transcoding support to the image request pipeline; then at runtime the site checks whether the client browser supports WebP and requests the WebP version for each image when it does. The effort to implement it turned out to be not much work for a lot of benefit.<br /> <br /> To find out more about how you can make your site faster, visit our <a href="https://developers.google.com/speed/">Make the Web Faster</a> site and dive into <a href="https://developers.google.com/speed/webp/">WebP</a>. <br /> <br /> <span class="post-author">Posted by Stephen Konig, Product Manager </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Using WebP to Improve Speed&url=https://blog.chromium.org/2013/02/using-webp-to-improve-speed.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2013/02/using-webp-to-improve-speed.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2013/02/using-webp-to-improve-speed.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/chrome%20web%20store' rel='tag'> chrome web store </a> , <a class='label' href='https://blog.chromium.org/search/label/webp' rel='tag'> webp </a> </span> </div> </div> </div> <div class='post' data-id='395117250806956416' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2012/08/lossless-and-transparency-modes-in-webp.html' itemprop='url' title='Lossless and Transparency Modes in WebP'> Lossless and Transparency Modes in WebP </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Thursday, August 30, 2012 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> <i>Cross-posted on the <a href="http://googledevelopers.blogspot.com/2012/08/lossless-and-transparency-modes-in-webp.html">Google Developers Blog</a></i><br /> <br /> At Google, we are constantly looking at ways to make web pages load faster. One way to do this is by making web images smaller. This is especially important for mobile devices where smaller images save both bandwidth and battery life. Earlier this month, we released <a href="http://code.google.com/p/webp/downloads/detail?name=libwebp-0.2.0.tar.gz">version 0.2 of the WebP library</a> that adds support for lossless and transparency modes to compress images. This version provides CPU and memory performance comparable to or better than PNG, yet results in <a href="https://developers.google.com/speed/webp/docs/webp_lossless_alpha_study">26% smaller files</a>.<br /> <br /> WebP’s improved compression comes from advanced techniques such as dedicated <a href="http://en.wikipedia.org/wiki/Entropy_encoding">entropy codes</a> for different color channels, exploiting 2D locality of <a href="http://en.wikipedia.org/wiki/LZ77_and_LZ78">backward reference distances</a> and a color cache of recently used colors. This complements basic techniques such as <a href="http://en.wikipedia.org/wiki/Dictionary_coder">dictionary coding</a>, <a href="http://en.wikipedia.org/wiki/Huffman_coding">Huffman coding</a> and <a href="http://en.wikipedia.org/wiki/Palette_(computing)">color indexing transform</a>. We think that we've only scratched the surface in improving compression. Our newly added support for <a href="http://en.wikipedia.org/wiki/RGBA_color_space">alpha transparency</a> with lossy images promises additional gains in this space, helping make WebP an efficient replacement for PNG.<br /> <br /> The new WebP modes are supported natively in the latest Beta version of Chrome. The <a href="https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification">bit stream specification</a> for these new WebP modes has been finalized and the <a href="https://developers.google.com/speed/webp/docs/riff_container">container specification</a> has been updated. We thank the community for their valuable feedback and for helping us evolve WebP as a new image compression format for the web. We encourage you to try these new compression methods on your favorite set of images, check out the code, and continue to provide <a href="http://www.webmproject.org/about/discuss/#webp-discuss">feedback</a>.<br /> <br /> <span class="post-author">Posted by Jyrki Alakuijala - Software Engineer </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> <i>Cross-posted on the <a href="http://googledevelopers.blogspot.com/2012/08/lossless-and-transparency-modes-in-webp.html">Google Developers Blog</a></i><br /> <br /> At Google, we are constantly looking at ways to make web pages load faster. One way to do this is by making web images smaller. This is especially important for mobile devices where smaller images save both bandwidth and battery life. Earlier this month, we released <a href="http://code.google.com/p/webp/downloads/detail?name=libwebp-0.2.0.tar.gz">version 0.2 of the WebP library</a> that adds support for lossless and transparency modes to compress images. This version provides CPU and memory performance comparable to or better than PNG, yet results in <a href="https://developers.google.com/speed/webp/docs/webp_lossless_alpha_study">26% smaller files</a>.<br /> <br /> WebP’s improved compression comes from advanced techniques such as dedicated <a href="http://en.wikipedia.org/wiki/Entropy_encoding">entropy codes</a> for different color channels, exploiting 2D locality of <a href="http://en.wikipedia.org/wiki/LZ77_and_LZ78">backward reference distances</a> and a color cache of recently used colors. This complements basic techniques such as <a href="http://en.wikipedia.org/wiki/Dictionary_coder">dictionary coding</a>, <a href="http://en.wikipedia.org/wiki/Huffman_coding">Huffman coding</a> and <a href="http://en.wikipedia.org/wiki/Palette_(computing)">color indexing transform</a>. We think that we've only scratched the surface in improving compression. Our newly added support for <a href="http://en.wikipedia.org/wiki/RGBA_color_space">alpha transparency</a> with lossy images promises additional gains in this space, helping make WebP an efficient replacement for PNG.<br /> <br /> The new WebP modes are supported natively in the latest Beta version of Chrome. The <a href="https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification">bit stream specification</a> for these new WebP modes has been finalized and the <a href="https://developers.google.com/speed/webp/docs/riff_container">container specification</a> has been updated. We thank the community for their valuable feedback and for helping us evolve WebP as a new image compression format for the web. We encourage you to try these new compression methods on your favorite set of images, check out the code, and continue to provide <a href="http://www.webmproject.org/about/discuss/#webp-discuss">feedback</a>.<br /> <br /> <span class="post-author">Posted by Jyrki Alakuijala - Software Engineer </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Lossless and Transparency Modes in WebP&url=https://blog.chromium.org/2012/08/lossless-and-transparency-modes-in-webp.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2012/08/lossless-and-transparency-modes-in-webp.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2012/08/lossless-and-transparency-modes-in-webp.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/webp' rel='tag'> webp </a> </span> </div> </div> </div> <div class='post' data-id='3299066394395948626' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2011/11/lossless-and-transparency-encoding-in.html' itemprop='url' title='Lossless and Transparency Encoding in WebP'> Lossless and Transparency Encoding in WebP </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Thursday, November 17, 2011 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> In September 2010 we announced the <a href="http://code.google.com/speed/webp/">WebP</a> image format with lossy compression. WebP was proposed as an alternative to JPEG, with <a href="http://code.google.com/speed/webp/docs/webp_study.html">25–34%</a> better compression compared to JPEG images at equivalent SSIM index. We received lots of feedback, and have been busy improving the format. <a href="https://groups.google.com/a/webmproject.org/group/webp-discuss/browse_thread/thread/4ab76cbde89e6ade/23512e5a1ed1dab0?lnk=raot">Last month</a> we announced WebP support for animation, ICC profile, XMP metadata and tiling. Today, we introduce a new mode in WebP to compress images losslessly, and support for transparency – also known as alpha channel – in both the lossless and lossy modes.<br /><br />With these new modes, you can now use WebP to better compress all types of images on the web. Photographic images typically encoded as JPEG can be encoded in WebP lossy mode to achieve smaller file size. Icons and graphics can be encoded better in WebP lossless mode than in PNG. WebP lossy with alpha can be used to create transparent images that have minimal visual degradation, yet are much smaller in file size. Animations compressed as GIFs can use animation support in WebP.<br /><br /><b>New lossless mode</b><br /><br />Our main focus for lossless mode has been in compression density and simplicity in decoding. On average, we get a 45% reduction in size when starting with PNGs found on the web, and a <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html#results">28% reduction</a> in size compared to PNGs that are re-compressed with pngcrush and pngout. Smaller images on the page mean faster page loads.<br /><br /><b>New transparency mode</b><br /><br />Today, webmasters who need transparency must encode images losslessly in PNG, leading to a significant size bloat. WebP alpha encodes images with low bits-per-pixel and provides an effective way to reduce the size of such images. Lossless compression of the alpha channel adds just <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html#results">22% bytes</a> over lossy (quality 90) WebP encoding. Smaller alpha overhead means richer images on webpages.<br /><br />You can find a more detailed compression study for these modes <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html">here</a> and sample images in the <a href="http://code.google.com/speed/webp/gallery2.html">WebP-Gallery</a>. The bit stream specification has not been finalized, and the encoding and decoding implementations have not yet been optimized for processing speed. We encourage you to <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html#reproduce">try it out</a> on your favorite set of images, check out the <a href="https://groups.google.com/a/webmproject.org/group/webp-discuss/browse_thread/thread/bf368050925aeb8e#">code</a>, and <a href="http://www.webmproject.org/about/discuss/#webp-discuss">provide feedback</a>. We hope WebP will now handle all your needs for web images, and we're working to get WebP supported in more browsers.<br /><br /><span class='post-author'>Posted by Jyrki Alakuijala, Vikas Arora, and Urvang Joshi, Software Engineers </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> In September 2010 we announced the <a href="http://code.google.com/speed/webp/">WebP</a> image format with lossy compression. WebP was proposed as an alternative to JPEG, with <a href="http://code.google.com/speed/webp/docs/webp_study.html">25–34%</a> better compression compared to JPEG images at equivalent SSIM index. We received lots of feedback, and have been busy improving the format. <a href="https://groups.google.com/a/webmproject.org/group/webp-discuss/browse_thread/thread/4ab76cbde89e6ade/23512e5a1ed1dab0?lnk=raot">Last month</a> we announced WebP support for animation, ICC profile, XMP metadata and tiling. Today, we introduce a new mode in WebP to compress images losslessly, and support for transparency – also known as alpha channel – in both the lossless and lossy modes.<br /><br />With these new modes, you can now use WebP to better compress all types of images on the web. Photographic images typically encoded as JPEG can be encoded in WebP lossy mode to achieve smaller file size. Icons and graphics can be encoded better in WebP lossless mode than in PNG. WebP lossy with alpha can be used to create transparent images that have minimal visual degradation, yet are much smaller in file size. Animations compressed as GIFs can use animation support in WebP.<br /><br /><b>New lossless mode</b><br /><br />Our main focus for lossless mode has been in compression density and simplicity in decoding. On average, we get a 45% reduction in size when starting with PNGs found on the web, and a <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html#results">28% reduction</a> in size compared to PNGs that are re-compressed with pngcrush and pngout. Smaller images on the page mean faster page loads.<br /><br /><b>New transparency mode</b><br /><br />Today, webmasters who need transparency must encode images losslessly in PNG, leading to a significant size bloat. WebP alpha encodes images with low bits-per-pixel and provides an effective way to reduce the size of such images. Lossless compression of the alpha channel adds just <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html#results">22% bytes</a> over lossy (quality 90) WebP encoding. Smaller alpha overhead means richer images on webpages.<br /><br />You can find a more detailed compression study for these modes <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html">here</a> and sample images in the <a href="http://code.google.com/speed/webp/gallery2.html">WebP-Gallery</a>. The bit stream specification has not been finalized, and the encoding and decoding implementations have not yet been optimized for processing speed. We encourage you to <a href="http://code.google.com/speed/webp/docs/webp_lossless_alpha_study.html#reproduce">try it out</a> on your favorite set of images, check out the <a href="https://groups.google.com/a/webmproject.org/group/webp-discuss/browse_thread/thread/bf368050925aeb8e#">code</a>, and <a href="http://www.webmproject.org/about/discuss/#webp-discuss">provide feedback</a>. We hope WebP will now handle all your needs for web images, and we're working to get WebP supported in more browsers.<br /><br /><span class='post-author'>Posted by Jyrki Alakuijala, Vikas Arora, and Urvang Joshi, Software Engineers </span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </noscript> </div> </div> <div class='share'> <span class='twitter-custom social-wrapper' data-href='http://twitter.com/share?text=Chromium Blog:Lossless and Transparency Encoding in WebP&url=https://blog.chromium.org/2011/11/lossless-and-transparency-encoding-in.html&via=ChromiumDev'> <img alt='Share on Twitter' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_twitter_black_24dp.png' width='24'/> </span> <span class='fb-custom social-wrapper' data-href='https://www.facebook.com/sharer.php?u=https://blog.chromium.org/2011/11/lossless-and-transparency-encoding-in.html'> <img alt='Share on Facebook' height='24' src='https://www.gstatic.com/images/icons/material/system/2x/post_facebook_black_24dp.png' width='24'/> </span> </div> <div class='post-footer'> <div class='cmt_iframe_holder' data-href='https://blog.chromium.org/2011/11/lossless-and-transparency-encoding-in.html' data-viewtype='FILTERED_POSTMOD'></div> <a href='https://plus.google.com/112374322230920073195' rel='author' style='display:none;'> Google </a> <div class='label-footer'> <span class='labels-caption'> Labels: </span> <span class='labels'> <a class='label' href='https://blog.chromium.org/search/label/webp' rel='tag'> webp </a> </span> </div> </div> </div> <div class='post' data-id='1020740177677012005' itemscope='' itemtype='http://schema.org/BlogPosting'> <h2 class='title' itemprop='name'> <a href='https://blog.chromium.org/2011/05/webp-in-chrome-picasa-gmail-with-slew.html' itemprop='url' title='WebP in Chrome, Picasa, Gmail With a Slew of New Features and Improvements'> WebP in Chrome, Picasa, Gmail With a Slew of New Features and Improvements </a> </h2> <div class='post-header'> <div class='published'> <span class='publishdate' itemprop='datePublished'> Friday, May 20, 2011 </span> </div> </div> <div class='post-body'> <div class='post-content' itemprop='articleBody'> <script type='text/template'> <div>Since we <a href="http://blog.chromium.org/2010/09/webp-new-image-format-for-web.html">announced</a> <a href="http://code.google.com/speed/webp">WebP</a>, a new image format based on WebM technology and the VP8 codec, we’ve been working hard with the open web community to improve and enhance it. Today we are happy to share news about a few new features and expanded support for WebP.</div><div><br /></div><div><b>New Features</b></div><div><br /></div><div>WebP's compression algorithms have been significantly improved while remaining completely</div><div>compatible with the previous releases. We hope the quality of a few sample images in the new gallery will <a href="http://code.google.com/speed/webp/gallery.html">delight you</a>.</div><div><br /></div><div>On the decoding side, we have integrated a fancy upsampler. Fancy upsampling reduces the pixelation of strong edges. You can see this feature when you zoom in, for example on a <a href="http://www.gstatic.com/webp/blog/red_example.webp">WebP image with red edges</a> converted from this PNG original:</div><div><br /></div><table><tbody><tr><td colspan="2" style="border:1px solid;"><figure><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQRXjvmeZo0IhR_yJPYV4cCZQ9habHNryBylooySvEo-rrmrtsGfrLz6KQsFvIujvDRcVppyaTtTeFJtPLuUdOHcg8oqYLmaNtEF2yixTnt7UtcF1gO3z-CGzhKxx5UXe7Wvts5lAWFw4/s1600/red_example.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608875651703805762" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQRXjvmeZo0IhR_yJPYV4cCZQ9habHNryBylooySvEo-rrmrtsGfrLz6KQsFvIujvDRcVppyaTtTeFJtPLuUdOHcg8oqYLmaNtEF2yixTnt7UtcF1gO3z-CGzhKxx5UXe7Wvts5lAWFw4/s400/red_example.png" style="cursor:pointer; cursor:hand;width: 345px; height: 294px;" /></a><figcaption>Original image in PNG format</figcaption></figure></td></tr><tr><td style="border:1px solid;"><figure><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLcoYcHS1kyppd3qsmCz_S8euAWZBJKkMMjJ5vtE7w4XCGxpNi9WNtVMlkmjQWfVkKUft8Id8SWi7eqzuMrJfeSXJHWlRUbsWmiFgaOyKlaOtGiqjnxbNS1eHLzQEJf_dIo3m5_3gKhPDR/s1600/red_detail2_prev.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608878116503878786" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLcoYcHS1kyppd3qsmCz_S8euAWZBJKkMMjJ5vtE7w4XCGxpNi9WNtVMlkmjQWfVkKUft8Id8SWi7eqzuMrJfeSXJHWlRUbsWmiFgaOyKlaOtGiqjnxbNS1eHLzQEJf_dIo3m5_3gKhPDR/s400/red_detail2_prev.png" style="cursor:pointer; cursor:hand;width: 108px; height: 108px;" /></a><figcaption>Without fancy upsampling: strong stair-like pattern</figcaption></figure></td><td style="border:1px solid;"><figure><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEid9vlyaR_Caiama8-zohm1AwIK8xsrnT9-deGd-o_04qKLJ67g7i-hDCm0eVhzWFhbzzsRqDUI3bxIQYbsTbPVPevBYrpcUOypMYPlBdQy86CDD-zJV19gQ8d6B7jsAPN6LDCMZFGz3QyL/s1600/red_detail2_new.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608878500478478674" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEid9vlyaR_Caiama8-zohm1AwIK8xsrnT9-deGd-o_04qKLJ67g7i-hDCm0eVhzWFhbzzsRqDUI3bxIQYbsTbPVPevBYrpcUOypMYPlBdQy86CDD-zJV19gQ8d6B7jsAPN6LDCMZFGz3QyL/s400/red_detail2_new.png" style="cursor:pointer; cursor:hand;width: 108px; height: 108px;" /></a><figcaption>With fancy upsampling: smoother edge</figcaption></figure></td></tr></tbody></table><br /><div>We also introduced the ability to incrementally decode the data as your computer downloads it from the web, a feature that allows the browser to display images without having to wait for the whole file to download. This feature is already enabled in Chrome 12.</div><div><br /></div><div>On the encoding side, to further improve quality, we focused on segmenting the picture into areas with similar compressibility. For each of these segments, we tune the amount of compression and filtering differently, and bits are redistributed where they are most useful. Take for instance the image reproduced below [1]:</div><div><br /></div><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU4cN5cQaaT-rEq98CJIS5pRqWqqOedP60Vks-SskWp-0gquAdbSoasZLgF2BGCQxu-92Jv7NDWe9515olKDcGjPhvmE7BrEnSO9IPwWqdlPh1yMg0ytb4nf_XPMWWKxmMsVhYmo7qG7VR/s1600/webp_segment.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608881115245572322" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU4cN5cQaaT-rEq98CJIS5pRqWqqOedP60Vks-SskWp-0gquAdbSoasZLgF2BGCQxu-92Jv7NDWe9515olKDcGjPhvmE7BrEnSO9IPwWqdlPh1yMg0ytb4nf_XPMWWKxmMsVhYmo7qG7VR/s400/webp_segment.png" style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 400px; height: 294px;" /></a></div><div>The easy segment contains lot of disparate signals and can be compressed more than the difficult one, which will be assigned more bits. In this example, the encoder only used two segments. By using even more segments (up to four), WebP is now able to retain many of the original <a href="http://www.gstatic.com/webp/blog/pors_loubous.webp">details</a> of the image [2]. This is in contrast to the frequent <a href="http://en.wikipedia.org/wiki/Ringing_artifacts#JPEG">ringing artifacts</a> one can clearly <a href="http://www.gstatic.com/webp/blog/pors_loubous.jpg">see in JPEG</a> images. </div><div><br /></div><div>The uneven distribution of bits between difficult and easy area is controlled in the new encoder using the <span style="font-family:courier;">-sns</span> parameter, short for Spatial Noise Shaping. Its value can be set from 0 to 100 (0 meaning OFF) and with a default of 80. Note that when you enable SNS, <a href="http://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio">PSNR</a> may be degraded, but the overall visual quality is much improved.</div><div><br /></div><div>We’ve added simple encoding and decoding example binaries to the <a href="http://code.google.com/speed/webp/download.html">libwebp library</a>. In addition, we’ve added JNI support that allows Java programs to decode WebP images. Next up is transparency, also known as Alpha channel; we’re experimenting with it <a href="https://review.webmproject.org/#change,2185">now</a> and planning to add it to the next stable version of the codec. In parallel, we continue to improve the codec’s speed and will release a complete specification for the metadata format.</div><div><br /></div><div><b>Increased adoption</b></div><div><br /></div><div>WebP is now natively supported in Chrome and <a href="http://my.opera.com/chooseopera/blog/on-a-horse-opera-turbo-to-the-rescue">Opera</a>. Google products including Gmail and Picasa Web Albums, have also added support to WebP so you can share, send and receive WebP images. WebP support is coming to AppEngine. In addition, <a href="//www.google.com/landing/instantpreviews/">Google Instant Previews</a> now store images in WebP to reduce their storage needs.</div><div><br /></div><div>Users that want to manipulate WebP images can now do so using software developed by the community including <a href="http://www.pixelmator.com/weblog/2010/10/06/pixelmator-1-6-2-adds-webp-support/">Pixelmator</a>, <a href="http://www.imagemagick.org/script/index.php">ImageMagick</a>, the <a href="http://www.telegraphics.com.au/sw/product/WebPFormat">WebP format plugin</a> for Photoshop and the <a href="http://sourceforge.net/projects/javavp8decoder/">Java VP8 decoder</a>. The open-source community has also contributed support for Mac OS X with <a href="http://distfiles.macports.org/webp/">MacPorts packages</a>, Linux <a href="http://packages.debian.org/unstable/main/libwebp-dev">Debian</a>, <a href="https://build.opensuse.org/package/show?package=libwebp&project=devel%3Alibraries%3Ac_c%2B%2B">OpenSUSE</a> and <a href="http://packages.gentoo.org/package/media-libs/libwebp">Gentoo</a> packages and the <a href="http://httpd.apache.org/">Apache HTTP Server</a>. On Windows, users who want to view WebP images natively, can download the <a href="http://code.google.com/speed/webp/docs/webp_codec.html">WebP codec</a>. This codec brings WebP support to such software as Microsoft Office 2010, Windows Media Center and Photo Edit.</div><div><br /></div><div>The new features, <a href="http://code.google.com/speed/webp/docs/webp_study.html">quality improvements</a> and increased adoption of WebP get us excited about its future. As always, we’re looking for more feedback as well as code contributions from the community. Let us know on the <a href="https://groups.google.com/a/webmproject.org/group/webp-discuss">mailing list</a> how your experiments are panning out and what new features you’d like to see in the future. </div><hr /><div style="font-size:x-small"><br /><div>Image credits:</div><div>[1]: "Kayaker at Ekstremsportveko 2010, Voss". Image Author: Kjetil Birkeland Moe. Reproduced with permission of the author. <a href="http://www.gstatic.com/webp/gallery/2.png">PNG source</a>, and <a href="http://www.kjetilbm.net/prosjekter/data/lyd-og-bilde/webp#">Blog post</a> by author with comparison of JPEG and WebP.</div><div><br /></div><div>[2]: A storm at Pors-Loubous, <a href="http://en.wikipedia.org/wiki/Plogoff">Plogoff</a>, <a href="http://en.wikipedia.org/wiki/Finist%C3%A8re">Finistère</a>, France. Image Author: Henri Camus. Permission: CC-BY; CC-BY-1.0. Source: <a href="http://commons.wikimedia.org/wiki/File:A_storm_at_Pors-Loubous.jpg">http://commons.wikimedia.org/wiki/File:A_storm_at_Pors-Loubous.jpg</a></div></div><br /><span class="post-author">Posted by Richard Rabbat, Product Manager and Pascal Massimino, Software Engineer</span> <span itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <meta content='https://plus.google.com/116899029375914044550' itemprop='url'/> </span> </script> <noscript> <div>Since we <a href="http://blog.chromium.org/2010/09/webp-new-image-format-for-web.html">announced</a> <a href="http://code.google.com/speed/webp">WebP</a>, a new image format based on WebM technology and the VP8 codec, we’ve been working hard with the open web community to improve and enhance it. Today we are happy to share news about a few new features and expanded support for WebP.</div><div><br /></div><div><b>New Features</b></div><div><br /></div><div>WebP's compression algorithms have been significantly improved while remaining completely</div><div>compatible with the previous releases. We hope the quality of a few sample images in the new gallery will <a href="http://code.google.com/speed/webp/gallery.html">delight you</a>.</div><div><br /></div><div>On the decoding side, we have integrated a fancy upsampler. Fancy upsampling reduces the pixelation of strong edges. You can see this feature when you zoom in, for example on a <a href="http://www.gstatic.com/webp/blog/red_example.webp">WebP image with red edges</a> converted from this PNG original:</div><div><br /></div><table><tbody><tr><td colspan="2" style="border:1px solid;"><figure><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQRXjvmeZo0IhR_yJPYV4cCZQ9habHNryBylooySvEo-rrmrtsGfrLz6KQsFvIujvDRcVppyaTtTeFJtPLuUdOHcg8oqYLmaNtEF2yixTnt7UtcF1gO3z-CGzhKxx5UXe7Wvts5lAWFw4/s1600/red_example.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608875651703805762" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEQRXjvmeZo0IhR_yJPYV4cCZQ9habHNryBylooySvEo-rrmrtsGfrLz6KQsFvIujvDRcVppyaTtTeFJtPLuUdOHcg8oqYLmaNtEF2yixTnt7UtcF1gO3z-CGzhKxx5UXe7Wvts5lAWFw4/s400/red_example.png" style="cursor:pointer; cursor:hand;width: 345px; height: 294px;" /></a><figcaption>Original image in PNG format</figcaption></figure></td></tr><tr><td style="border:1px solid;"><figure><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLcoYcHS1kyppd3qsmCz_S8euAWZBJKkMMjJ5vtE7w4XCGxpNi9WNtVMlkmjQWfVkKUft8Id8SWi7eqzuMrJfeSXJHWlRUbsWmiFgaOyKlaOtGiqjnxbNS1eHLzQEJf_dIo3m5_3gKhPDR/s1600/red_detail2_prev.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608878116503878786" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgLcoYcHS1kyppd3qsmCz_S8euAWZBJKkMMjJ5vtE7w4XCGxpNi9WNtVMlkmjQWfVkKUft8Id8SWi7eqzuMrJfeSXJHWlRUbsWmiFgaOyKlaOtGiqjnxbNS1eHLzQEJf_dIo3m5_3gKhPDR/s400/red_detail2_prev.png" style="cursor:pointer; cursor:hand;width: 108px; height: 108px;" /></a><figcaption>Without fancy upsampling: strong stair-like pattern</figcaption></figure></td><td style="border:1px solid;"><figure><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEid9vlyaR_Caiama8-zohm1AwIK8xsrnT9-deGd-o_04qKLJ67g7i-hDCm0eVhzWFhbzzsRqDUI3bxIQYbsTbPVPevBYrpcUOypMYPlBdQy86CDD-zJV19gQ8d6B7jsAPN6LDCMZFGz3QyL/s1600/red_detail2_new.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608878500478478674" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEid9vlyaR_Caiama8-zohm1AwIK8xsrnT9-deGd-o_04qKLJ67g7i-hDCm0eVhzWFhbzzsRqDUI3bxIQYbsTbPVPevBYrpcUOypMYPlBdQy86CDD-zJV19gQ8d6B7jsAPN6LDCMZFGz3QyL/s400/red_detail2_new.png" style="cursor:pointer; cursor:hand;width: 108px; height: 108px;" /></a><figcaption>With fancy upsampling: smoother edge</figcaption></figure></td></tr></tbody></table><br /><div>We also introduced the ability to incrementally decode the data as your computer downloads it from the web, a feature that allows the browser to display images without having to wait for the whole file to download. This feature is already enabled in Chrome 12.</div><div><br /></div><div>On the encoding side, to further improve quality, we focused on segmenting the picture into areas with similar compressibility. For each of these segments, we tune the amount of compression and filtering differently, and bits are redistributed where they are most useful. Take for instance the image reproduced below [1]:</div><div><br /></div><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU4cN5cQaaT-rEq98CJIS5pRqWqqOedP60Vks-SskWp-0gquAdbSoasZLgF2BGCQxu-92Jv7NDWe9515olKDcGjPhvmE7BrEnSO9IPwWqdlPh1yMg0ytb4nf_XPMWWKxmMsVhYmo7qG7VR/s1600/webp_segment.png" onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}"><img alt="" border="0" id="BLOGGER_PHOTO_ID_5608881115245572322" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiU4cN5cQaaT-rEq98CJIS5pRqWqqOedP60Vks-SskWp-0gquAdbSoasZLgF2BGCQxu-92Jv7NDWe9515olKDcGjPhvmE7BrEnSO9IPwWqdlPh1yMg0ytb4nf_XPMWWKxmMsVhYmo7qG7VR/s400/webp_segment.png" style="display:block; margin:0px auto 10px; text-align:center;cursor:pointer; cursor:hand;width: 400px; height: 294px;" /></a></div><div>The easy segment contains lot of disparate signals and can be compressed more than the difficult one, which will be assigned more bits. In this example, the encoder only used two segments. By using even more segments (up to four), WebP is now able to retain many of the original <a href="http://www.gstatic.com/webp/blog/pors_loubous.webp">details</a> of the image [2]. This is in contrast to the frequent <a href="http://en.wikipedia.org/wiki/Ringing_artifacts#JPEG">ringing artifacts</a> one can clearly <a href="http://www.gstatic.com/webp/blog/pors_loubous.jpg">see in JPEG</a> images. </div><div><br /></div><div>The uneven distribution of bits between difficult and easy area is controlled in the new encoder using the <span style="font-family:courier;">-sns</span> parameter, short for Spatial Noise Shaping. Its value can be set from 0 to 100 (0 meaning OFF) and with a default of 80. Note that when you enable SNS, <a href="http://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio">PSNR</a> may be degraded, but the overall visual quality is much improved.</div><div><br /></div><div>We’ve added simple encoding and decoding example binaries to the <a href="http://code.google.com/speed/webp/download.html">libwebp library</a>. In addition, we’ve added JNI support that allows Java programs to decode WebP images. Next up is transparency, also known as Alpha channel; we’re experimenting with it <a href="https://review.webmproject.org/#change,2185">now</a> and planning to add it to the next stable version of the codec. In parallel, we continue to improve the codec’s speed and will release a complete specification for the metadata format.</div><div><br /></div><div><b>Increased adoption</b></div><div><br /></div><div>WebP is now natively supported in Chrome and <a href="http://my.opera.com/chooseopera/blog/on-a-horse-opera-turbo-to-the-rescue">Opera</a>. Google products including Gmail and Picasa Web Albums, have also added support to WebP so you can share, send and receive WebP images. WebP support is coming to AppEngine. In addition, <a href="//www.google.com/landing/instantpreviews/">Google Instant Previews</a> now store images in WebP to reduce their storage needs.</div><div><br /></div><div>Users that want to manipulate WebP images can now do so using software developed by the community including <a href="http://www.pixelmator.com/weblog/2010/10/06/pixelmator-1-6-2-adds-webp-support/">Pixelmator</a>, <a href="http://www.imagemagick.org/script/index.php">ImageMagick</a>, the <a href="http://www.telegraphics.com.au/sw/product/WebPFormat">WebP format plugin</a> for Photoshop and the <a href="http://sourceforge.net/projects/javavp8decoder/">Java VP8 decoder</a>. The open-source community has also contributed support for Mac OS X with <a href="http://distfiles.macports.org/webp/">MacPorts packages</a>, Linux <a href="http://packages.debian.org/unstable/main/libwebp-dev">Debian</a>, <a href="https://build.opensuse.org/package/show?package=libwebp&project=devel%3Alibraries%3Ac_c%2B%2B">OpenSUSE</a> and <a href="http://packages.gentoo.org/package/media-libs/libwebp">Gentoo</a> packages and the <a href="http://httpd.apache.org/">Apache HTTP Server</a>. On Windows, users who want to view WebP images natively, can download the <a href="http://code.google.com/speed/webp/docs/webp_codec.html">WebP codec</a>. This codec brings WebP support to such software as Microsoft Office 2010, Windows Media Center and Photo Edit.</div><div><br /></div><div>The new features, <a href="http://code.google.com/speed/webp/docs/webp_study.html">quality improvements</a> and increased adoption of WebP get us excited about its future. As always, we’re looking for more feedback as well as code contributions from the community. Let us know on the <a href="https://groups.google.com/a/webmproject.org/group/webp-discuss">mailing list</a> how your experiments are panning out and what new features you’d like to see in the future. </div><hr /><div style="font-size:x-small"><br /><div>Image credits:</div><div>[1]: "Kayaker at Ekstremsportveko 2010, Voss". Image Author: Kjetil Birkeland Moe. Reproduced with permission of the author. <a href="http://www.gstatic.com/webp/gallery/2.png">PNG source</a>, and <a href="http://www.kjetilbm.net/prosjekter/data/lyd-og-bilde/webp#">Blog post</a> by author with comparison of JPEG and WebP.</div><div><br /></div><div>[2]: A storm at Pors-Loubous, <a href="http://en.wikipedia.org/wiki/Plogoff">Plogoff</a>, <a href="http://en.wikipedia.org/wiki/Finist%C3%A8re">Finistère</a>, France. Image Author: Henri Camus. Permission: CC-BY; CC-BY-1.0. 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href='https://blog.chromium.org/search/label/chrome%20on%20ios'> chrome on ios </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Chrome%20on%20Mac'> Chrome on Mac </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Chrome%20OS'> Chrome OS </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20privacy'> chrome privacy </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20releases'> chrome releases </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20security'> chrome security </a> <span dir='ltr'> 10 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chrome%20web%20store'> chrome web store </a> <span dir='ltr'> 32 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromedevtools'> chromedevtools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeframe'> chromeframe </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeos'> chromeos </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromeos.dev'> chromeos.dev </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/chromium'> chromium </a> <span dir='ltr'> 9 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cloud%20print'> cloud print </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/coalition'> coalition </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/coalition%20for%20better%20ads'> coalition for better ads </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/contact%20picker'> contact picker </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/content%20indexing'> content indexing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cookies'> cookies </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/core%20web%20vitals'> core web vitals </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/csrf'> csrf </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/css'> css </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/cumulative%20layout%20shift'> cumulative layout shift </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/custom%20tabs'> custom tabs </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/dart'> dart </a> <span dir='ltr'> 8 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/dashboard'> dashboard </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Data%20Saver'> Data Saver </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Data%20saver%20desktop%20extension'> Data saver desktop extension </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/day%202'> day 2 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/deceptive%20installation'> deceptive installation </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/declarative%20net%20request%20api'> declarative net request api </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/design'> design </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/developer%20dashboard'> developer dashboard </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Developer%20Program%20Policy'> Developer Program Policy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/developer%20website'> developer website </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/devtools'> devtools </a> <span dir='ltr'> 13 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/digital%20event'> digital event </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/discoverability'> discoverability </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/DNS-over-HTTPS'> DNS-over-HTTPS </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/DoH'> DoH </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/emoji'> emoji </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/emscriptem'> emscriptem </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/enterprise'> enterprise </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/extensions'> extensions </a> <span dir='ltr'> 27 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Fast%20badging'> Fast badging </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/faster%20web'> faster web </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/features'> features </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/feedback'> feedback </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/field%20data'> field data </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/first%20input%20delay'> first input delay </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Follow'> Follow </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fonts'> fonts </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/form%20controls'> form controls </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/frameworks'> frameworks </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fugu'> fugu </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/fund'> fund </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/funding'> funding </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/gdd'> gdd </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20earth'> google earth </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20event'> google event </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20io%202019'> google io 2019 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/google%20web%20developer'> google web developer </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/googlechrome'> googlechrome </a> <span dir='ltr'> 12 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/harmful%20ads'> harmful ads </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/html5'> html5 </a> <span dir='ltr'> 11 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/HTTP%2F3'> HTTP/3 </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/HTTPS'> HTTPS </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/iframes'> iframes </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/images'> images </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/incognito'> incognito </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/insecure%20forms'> insecure forms </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/intent%20to%20explain'> intent to explain </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ios'> ios </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ios%20Chrome'> ios Chrome </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/issue%20tracker'> issue tracker </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/jank'> jank </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/javascript'> javascript </a> <span dir='ltr'> 5 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lab%20data'> lab data </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/labelling'> labelling </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/largest%20contentful%20paint'> largest contentful paint </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/launch'> launch </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lazy-loading'> lazy-loading </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lighthouse'> lighthouse </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/linux'> linux </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Lite%20Mode'> Lite Mode </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Lite%20pages'> Lite pages </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/loading%20interventions'> loading interventions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/loading%20optimizations'> loading optimizations </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/lock%20icon'> lock icon </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/long-tail'> long-tail </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mac'> mac </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/manifest%20v3'> manifest v3 </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/metrics'> metrics </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/microsoft%20edge'> microsoft edge </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mixed%20forms'> mixed forms </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/mobile'> mobile </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/na'> na </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/native%20client'> native client </a> <span dir='ltr'> 8 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/native%20file%20system'> native file system </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/New%20Features'> New Features </a> <span dir='ltr'> 5 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/notifications'> notifications </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/octane'> octane </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/open%20web'> open web </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/origin%20trials'> origin trials </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pagespeed%20insights'> pagespeed insights </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pagespeedinsights'> pagespeedinsights </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/passwords'> passwords </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payment%20handler'> payment handler </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payment%20request'> payment request </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/payments'> payments </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/performance'> performance </a> <span dir='ltr'> 20 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/performance%20tools'> performance tools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/permission%20UI'> permission UI </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/permissions'> permissions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/play%20store'> play store </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/portals'> portals </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/prefetching'> prefetching </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/privacy'> privacy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/privacy%20sandbox'> privacy sandbox </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/private%20prefetch%20proxy'> private prefetch proxy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/profile%20guided%20optimization'> profile guided optimization </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/progressive%20web%20apps'> progressive web apps </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Project%20Strobe'> Project Strobe </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/protection'> protection </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/pwa'> pwa </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/QUIC'> QUIC </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/quieter%20permissions'> quieter permissions </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/releases'> releases </a> <span dir='ltr'> 3 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/removals'> removals </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/rlz'> rlz </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/root%20program'> root program </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/safe%20browsing'> safe browsing </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/Secure%20DNS'> Secure DNS </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/security'> security </a> <span dir='ltr'> 36 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/site%20isolation'> site isolation </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/slow%20loading'> slow loading </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/sms%20receiver'> sms receiver </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spam%20policy'> spam policy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spdy'> spdy </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/spectre'> spectre </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/speed'> speed </a> <span dir='ltr'> 4 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/ssl'> ssl </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/store%20listing'> store listing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/strobe'> strobe </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/subscription%20pages'> subscription pages </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/suspicious%20site%20reporter%20extension'> suspicious site reporter extension </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/TCP'> TCP </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/the%20fast%20and%20the%20curious'> the fast and the curious </a> <span dir='ltr'> 23 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/TLS'> TLS </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/tools'> tools </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/tracing'> tracing </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/transparency'> transparency </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/trusted%20web%20activities'> trusted web activities </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/twa'> twa </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/user%20agent%20string'> user agent string </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/user%20data%20policy'> user data policy </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/v8'> v8 </a> <span dir='ltr'> 6 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/video'> video </a> <span dir='ltr'> 2 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/wasm'> wasm </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web'> web </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' href='https://blog.chromium.org/search/label/web%20apps'> web apps </a> <span dir='ltr'> 1 </span> </li> <li> <a dir='ltr' 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href='https://blog.chromium.org/2019/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2019/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2018/'> 2018 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> 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class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2018/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2017/'> 2017 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li 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class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2017/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2016/'> 2016 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2016/11/'> Nov </a> </div> <div class='items'> 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class='post-count-link' href='https://blog.chromium.org/2014/'> 2014 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2014/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2013/'> 2013 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2013/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2012/'> 2012 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li 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class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2012/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2011/'> 2011 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/12/'> Dec </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/11/'> Nov </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/10/'> Oct </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/09/'> Sep </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/08/'> Aug </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/07/'> Jul </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/06/'> Jun </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/05/'> May </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/04/'> Apr </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2011/01/'> Jan </a> </div> <div class='items'> </div> </li> 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href='https://blog.chromium.org/2009/03/'> Mar </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/02/'> Feb </a> </div> <div class='items'> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class=''> <a class='post-count-link' href='https://blog.chromium.org/2009/01/'> Jan </a> </div> <div class='items'> </div> </li> </ul> </div> </li> </ul> <ul class='hierarchy'> <li class='archivedate collapsed'> <div class='intervalToggle'> <span class='new-toggle' href='javascript:void(0)'> <i class='material-icons arrow'>  </i> </span> <a class='toggle' href='javascript:void(0)' style='display: none'> <span class='zippy'> <i class='material-icons'>  </i>   </span> </a> <a class='post-count-link' href='https://blog.chromium.org/2008/'> 2008 </a> </div> <div class='items'> <ul class='hierarchy'> <li class='archivedate collapsed'> 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style='margin-top: -16px;' width='92'/> </a> <ul> <li> <a href='//www.google.com/'> Google </a> </li> <li> <a href='//www.google.com/policies/privacy/'> Privacy </a> </li> <li> <a href='//www.google.com/policies/terms/'> Terms </a> </li> </ul> </div> </div> <script type='text/javascript'> //<![CDATA[ // Social sharing popups. var postEl = document.getElementsByClassName('social-wrapper'); var postCount = postEl.length; for(i=0; i<postCount;i++){ postEl[i].addEventListener("click", function(event){ var postUrl = this.getAttribute("data-href"); window.open( postUrl,'popUpWindow','height=500,width=500,left=10,top=10,resizable=yes,scrollbars=yes,toolbar=yes,menubar=no,location=no,directories=no,status=yes'); });} //]]> </script> <script type='text/javascript'> //<![CDATA[ var BreakpointHandler = function() { this.initted = false; this.isHomePage = false; this.isMobile = false; }; BreakpointHandler.prototype.finalizeSummary = function(summaryHtml, lastNode) { // Use $.trim for IE8 compatibility summaryHtml = $.trim(summaryHtml).replace(/(<br>|\s)+$/,''); if (lastNode.nodeType == 3) { var lastChar = summaryHtml.slice(-1); if (!lastChar.match(/[.”"?]/)) { if (!lastChar.match(/[A-Za-z]/)) { summaryHtml = summaryHtml.slice(0, -1); } summaryHtml += ' ...'; } } else if (lastNode.nodeType == 1 && (lastNode.nodeName == 'I' || lastNode.nodeName == 'A')) { summaryHtml += ' ...'; } return summaryHtml; }; BreakpointHandler.prototype.generateSummaryFromContent = function(content, numWords) { var seenWords = 0; var summaryHtml = ''; for (var i=0; i < content.childNodes.length; i++) { var node = content.childNodes[i]; var nodeText; if (node.nodeType == 1) { if (node.hasAttribute('data-about-pullquote')) { continue; } nodeText = node.textContent; if (nodeText === undefined) { // innerText for IE8 nodeText = node.innerText; } if (node.nodeName == 'DIV' || node.nodeName == 'B') { // Don't end early if we haven't seen enough words. if (seenWords < 10) { continue; } if (i > 0) { summaryHtml = this.finalizeSummary(summaryHtml, content.childNodes[i-1]); } break; } summaryHtml += node.outerHTML; } else if (node.nodeType == 3) { nodeText = node.nodeValue; summaryHtml += nodeText + ' '; } var words = nodeText.match(/\S+\s*/g); if (!words) { continue; } var remain = numWords - seenWords; if (words.length >= remain) { summaryHtml = this.finalizeSummary(summaryHtml, node); break; } seenWords += words.length; } return summaryHtml; }; BreakpointHandler.prototype.detect = function() { var match, pl = /\+/g, search = /([^&=]+)=?([^&]*)/g, decode = function (s) { return decodeURIComponent(s.replace(pl, " ")); }, query = window.location.search.substring(1); var urlParams = {}; while (match = search.exec(query)) urlParams[decode(match[1])] = decode(match[2]); this.isListPage = $('html').hasClass('list-page'); this.isMobile = urlParams['m'] === '1'; this.isHomePage = window.location.pathname == '/'; }; BreakpointHandler.prototype.initContent = function() { var self = this; 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