Add the Google Analytics tag for Google Analytics 4 properties to your site with gtag.js

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position="header"> <template class="thumb-down-categories"> [{ "type": "thumb-down", "id": "missingTheInformationINeed", "label":"Missing the information I need" },{ "type": "thumb-down", "id": "tooComplicatedTooManySteps", "label":"Too complicated / too many steps" },{ "type": "thumb-down", "id": "outOfDate", "label":"Out of date" },{ "type": "thumb-down", "id": "samplesCodeIssue", "label":"Samples/Code issue" },{ "type": "thumb-down", "id": "otherDown", "label":"Other" }] </template> <template class="thumb-up-categories"> [{ "type": "thumb-up", "id": "easyToUnderstand", "label":"Easy to understand" },{ "type": "thumb-up", "id": "solvedMyProblem", "label":"Solved my problem" },{ "type": "thumb-up", "id": "otherUp", "label":"Other" }] </template> </devsite-thumb-rating> </div> <h1 class="devsite-page-title">Add the Google Analytics tag for Google Analytics 4 properties to your site with gtag.js<devsite-bookmark></devsite-bookmark></h1> <devsite-toc class="devsite-nav" devsite-toc-embedded> </devsite-toc> <div class="devsite-article-body clearfix "> <p>This article describes how to set up a web page for Google Analytics 4 (GA4) properties with gtag.js. <a href="https://web.archive.org/web/20210418073054/https://support.google.com/analytics/answer/9325020">Learn more about GA4 properties</a>.</p> <p>The global site tag (gtag.js) is a JavaScript tagging framework and API that allows you to send event data to Google's measurement products. The default tag provided by Google Analytics is based on gtag.js, and can be obtained <a href="https://web.archive.org/web/20210418073054/https://support.google.com/analytics/answer/1008080">directly from within Google Analytics</a>. You can also deploy Google Analytics from <a href="https://web.archive.org/web/20210418073054/https://support.google.com/tagmanager/answer/6107124">Tag Manager</a>. If you'd like to compose your own Analytics tag, or integrate an additional Analytics property with an existing gtag.js installation, then this article is for you.</p> <h2 id="install_a_new_tag" data-text="Install a new tag">Install a new tag</h2> <p>To install Google Analytics when no existing global site tag exists, use this prototype. Replace <code translate="no" dir="ltr">MEASUREMENT_ID</code> with the ID of the Google Analytics property to which you want to send data. This code should appear immediately after the opening <code translate="no" dir="ltr"><head></code> tag. You need only one global snippet per page.</p> <pre class="prettyprint lang-html" translate="no" dir="ltr"><code translate="no" dir="ltr"> <script async src="https://www.googletagmanager.com/gtag/js?id=MEASUREMENT_ID"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'MEASUREMENT_ID'); </script> </code></pre> <p>This code loads the gtag.js library, establishes a default Google Analytics measurement ID, and automatically sends a <code translate="no" dir="ltr">page_view</code> event to Google Analytics.</p> <aside class="note"><strong>Note:</strong><span> Each page should have only one global site tag. If you already have a global site tag on your page, add an additional <code translate="no" dir="ltr">config</code> line to the existing tag. There is no need to add multiple instances of the gtag.js tag to your code.</span></aside> <h2 id="add_an_additional_google_analytics_property_to_an_existing_tag" data-text="Add an additional Google Analytics property to an existing tag">Add an additional Google Analytics property to an existing tag</h2> <p>To configure a second Google Analytics property, add an additional config command. To build on the previous example, add a new config entry and replace <code translate="no" dir="ltr">MEASUREMENT_ID_2</code> with the ID from a second Google Analytics account:</p> <pre class="prettyprint lang-html" translate="no" dir="ltr"><code translate="no" dir="ltr"><script async src="https://www.googletagmanager.com/gtag/js?id=MEASUREMENT_ID"> </script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'MEASUREMENT_ID'); gtag('config', 'MEASUREMENT_ID_2'); </script> </code></pre> <p>It is also possible to add Google Analytics to global site tags that originated from other products such as Google Ads, Floodlight, etc. <a href="https://web.archive.org/web/20210418073054/https://developers.google.com/gtagjs/devguide/add">Learn more.</a></p> <h2 id="related_resources" data-text="Related resources">Related resources</h2> <ul> <li>Google Analytics help center: <a href="https://web.archive.org/web/20210418073054/https://support.google.com/analytics/answer/9325020">Get started with Analytics</a></li> <li>Google Analytics help center: <a href="https://web.archive.org/web/20210418073054/https://support.google.com/analytics/answer/9310895">Implementation guide for gtag.js</a></li> <li>Google Developers: <a href="https://web.archive.org/web/20210418073054/https://developers.google.com/gtagjs/">gtag.js Developer Guide</a></li> <li>Google Tag Manager help center: <a href="https://web.archive.org/web/20210418073054/https://support.google.com/tagmanager/answer/9442095">Google Analytics 4 tags</a></li> </ul> </div> <devsite-thumb-rating position="footer"> <template class="thumb-down-categories"> [{ "type": "thumb-down", "id": "missingTheInformationINeed", "label":"Missing the information I need" },{ "type": "thumb-down", "id": "tooComplicatedTooManySteps", "label":"Too complicated / too many steps" },{ "type": "thumb-down", "id": "outOfDate", "label":"Out of date" },{ "type": "thumb-down", "id": "samplesCodeIssue", "label":"Samples/Code issue" },{ "type": "thumb-down", "id": "otherDown", "label":"Other" }] </template> <template class="thumb-up-categories"> [{ "type": "thumb-up", "id": "easyToUnderstand", "label":"Easy to understand" },{ "type": "thumb-up", "id": "solvedMyProblem", "label":"Solved my problem" },{ "type": "thumb-up", "id": "otherUp", "label":"Other" }] </template> </devsite-thumb-rating> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://web.archive.org/web/20210418073054/https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://web.archive.org/web/20210418073054/https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. For details, see the <a href="https://web.archive.org/web/20210418073054/https://developers.google.com/site-policies">Google Developers Site Policies</a>. 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