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<!DOCTYPE html> <html class="client-nojs" lang="en" dir="ltr"> <head> <meta charset="UTF-8"/> <title>Profile folder - Firefox - MozillaZine Knowledge Base</title> <script>document.documentElement.className="client-js";RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"bf956a149f69976e2de16854","wgCSPNonce":false,"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Profile_folder_-_Firefox","wgTitle":"Profile folder - Firefox","wgCurRevisionId":46741,"wgRevisionId":46741,"wgArticleId":5290,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Profiles"],"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Profile_folder_-_Firefox","wgRelevantArticleId":5290,"wgIsProbablyEditable":false,"wgRelevantPageIsProbablyEditable":false,"wgRestrictionEdit":[],"wgRestrictionMove":[]};RLSTATE={"site.styles":"ready", "user.styles":"ready","user":"ready","user.options":"loading","skins.monobook.styles":"ready"};RLPAGEMODULES=["site","mediawiki.page.ready","mediawiki.toc","skins.monobook.scripts"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.implement("user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"});});});</script> <link rel="stylesheet" href="/load.php?lang=en&modules=skins.monobook.styles&only=styles&skin=monobook"/> <script async="" src="/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=monobook"></script> <meta name="generator" content="MediaWiki 1.40.1"/> <meta name="robots" content="max-image-preview:standard"/> <meta name="format-detection" content="telephone=no"/> <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes, minimum-scale=0.25, maximum-scale=5.0"/> <link rel="icon" href="/favicon.ico"/> <link rel="search" type="application/opensearchdescription+xml" href="/opensearch_desc.php" title="MozillaZine Knowledge Base (en)"/> <link rel="EditURI" type="application/rsd+xml" href="//kb.mozillazine.org/api.php?action=rsd"/> <link rel="alternate" type="application/atom+xml" title="MozillaZine Knowledge Base Atom feed" href="/index.php?title=Special:RecentChanges&feed=atom"/> </head> <body class="mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-Profile_folder_-_Firefox rootpage-Profile_folder_-_Firefox skin-monobook action-view skin--responsive"><div id="globalWrapper"> <div id="column-content"> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice"></div> <div class="mw-indicators"> </div> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Profile folder - Firefox</span></h1> <div id="bodyContent" class="monobook-body"> <div id="siteSub">From MozillaZine Knowledge Base</div> <div id="contentSub" ><div id="mw-content-subtitle"></div></div> <div id="jump-to-nav"></div><a href="#column-one" class="mw-jump-link">Jump to navigation</a><a href="#searchInput" class="mw-jump-link">Jump to search</a>  <div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="en" dir="ltr"><div class="mw-parser-output"><p><i>This article is about Firefox's profile folder. See also <a href="/Profile_folder_-_Thunderbird" title="Profile folder - Thunderbird">Profile folder - Thunderbird</a> and <a href="/Profile_folder_-_SeaMonkey" title="Profile folder - SeaMonkey">Profile folder - SeaMonkey</a>.</i> </p><p>Firefox stores a user's personal information such as bookmarks, extensions, and user preferences in a unique <a href="/Category:Profiles" title="Category:Profiles"> profile</a>. The first time you start Firefox, it will automatically create a default profile; additional profiles can be created using the <a href="/Profile_Manager" title="Profile Manager">Profile Manager</a>. The settings which form a profile are stored in files within a special folder on your computer — this is the <i>profile folder</i>. </p> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Finding_the_profile_folder"><span class="tocnumber">1</span> <span class="toctext">Finding the profile folder</span></a> <ul> <li class="toclevel-2 tocsection-2"><a href="#Using_the_Help_menu"><span class="tocnumber">1.1</span> <span class="toctext">Using the Help menu</span></a></li> <li class="toclevel-2 tocsection-3"><a href="#Navigating_to_the_profile_folder"><span class="tocnumber">1.2</span> <span class="toctext">Navigating to the profile folder</span></a> <ul> <li class="toclevel-3 tocsection-4"><a href="#Windows"><span class="tocnumber">1.2.1</span> <span class="toctext">Windows</span></a></li> <li class="toclevel-3 tocsection-5"><a href="#Linux"><span class="tocnumber">1.2.2</span> <span class="toctext">Linux</span></a></li> <li class="toclevel-3 tocsection-6"><a href="#Mac"><span class="tocnumber">1.2.3</span> <span class="toctext">Mac</span></a></li> </ul> </li> <li class="toclevel-2 tocsection-7"><a href="#Other_methods_of_finding_a_profile"><span class="tocnumber">1.3</span> <span class="toctext">Other methods of finding a profile</span></a> <ul> <li class="toclevel-3 tocsection-8"><a href="#File_search"><span class="tocnumber">1.3.1</span> <span class="toctext">File search</span></a></li> <li class="toclevel-3 tocsection-9"><a href="#Using_the_JavaScript_or_Error_Console"><span class="tocnumber">1.3.2</span> <span class="toctext">Using the JavaScript or Error Console</span></a></li> <li class="toclevel-3 tocsection-10"><a href="#Using_an_Extension"><span class="tocnumber">1.3.3</span> <span class="toctext">Using an Extension</span></a></li> </ul> </li> </ul> </li> <li class="toclevel-1 tocsection-11"><a href="#Viewing_profile_directory_structure_from_above"><span class="tocnumber">2</span> <span class="toctext">Viewing profile directory structure from above</span></a></li> <li class="toclevel-1 tocsection-12"><a href="#Managing_profiles"><span class="tocnumber">3</span> <span class="toctext">Managing profiles</span></a></li> <li class="toclevel-1 tocsection-13"><a href="#Files_and_folders_in_the_profile"><span class="tocnumber">4</span> <span class="toctext">Files and folders in the profile</span></a> <ul> <li class="toclevel-2 tocsection-14"><a href="#Folders"><span class="tocnumber">4.1</span> <span class="toctext">Folders</span></a></li> <li class="toclevel-2 tocsection-15"><a href="#Files"><span class="tocnumber">4.2</span> <span class="toctext">Files</span></a></li> <li class="toclevel-2 tocsection-16"><a href="#Files_without_specific_names"><span class="tocnumber">4.3</span> <span class="toctext">Files without specific names</span></a></li> <li class="toclevel-2 tocsection-17"><a href="#Files_and_folders_outside_the_profile_folder"><span class="tocnumber">4.4</span> <span class="toctext">Files and folders outside the profile folder</span></a></li> </ul> </li> <li class="toclevel-1 tocsection-18"><a href="#External_links"><span class="tocnumber">5</span> <span class="toctext">External links</span></a></li> </ul> </div> <h2><span class="mw-headline" id="Finding_the_profile_folder">Finding the profile folder</span></h2> <p>The Firefox profile containing your user data and settings is <u>not</u> found in the <a href="/Installation_directory" title="Installation directory">installation directory</a> but rather in a separate location on your computer. Use the information given below to find your Firefox profile folder. </p> <h3><span class="mw-headline" id="Using_the_Help_menu">Using the Help menu</span></h3> <p>(Firefox 3.6 and above) <b>You can open your profile folder directly from the Firefox Help menu</b>, as follows: <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=367596">[1]</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=518601">[2]</a> </p> <ul><li>In the Firefox menu, click on the "Help" menu item ("?" in current versions) and select "Troubleshooting Information". (Alternatively, enter <b>about:support</b> in the address bar.) The <i><a href="/About_protocol_links" title="About protocol links">about:support</a></i> page will open.</li> <li>Under "Application Basics", <ul><li>On Windows and Linux, depending on Firefox version, click on "Show Folder" (Windows) "Open Directory" (Linux) or "Open Containing Folder".</li> <li>On Mac OS, click on "Show in Finder".</li></ul></li></ul> <p><b>Note:</b> On Windows, you can also press the "Alt" key to temporarily show the Firefox menu bar, which contains the Help menu item. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=456535">[3]</a> <a rel="nofollow" class="external autonumber" href="https://support.mozilla.org/kb/Menu+bar+is+missing">[4]</a> </p> <h3><span class="mw-headline" id="Navigating_to_the_profile_folder">Navigating to the profile folder</span></h3> <p>Profile folders are placed in a common location by default but are named randomly for additional security (e.g., "xxxxxxxx.default" is the profile folder name for the "default" profile, where xxxxxxxx represents a random strung of characters). If you created a new profile and chose a custom location, see <a href="#Other_methods_of_finding_a_profile">Other methods of finding a profile</a> below. </p><p>On Windows 2000 and above, Linux, and starting in Mac OS X 10.7 Lion, the parent folder containing your profile folder is hidden by default and you will need to <a href="/Show_hidden_files_and_folders" title="Show hidden files and folders">show hidden files and folders</a> to navigate to the profile folder. </p> <h4><span class="mw-headline" id="Windows">Windows</span></h4> <p><b>On Windows 2000 and Windows XP,</b> profile folders are in this location, by default: </p> <ul><li>C:\Documents and Settings\<i><Windows login/user name></i>\Application Data\Mozilla\Firefox\Profiles\<profile folder></li></ul> <p>The Application Data folder is a hidden folder; to show hidden folders, open Windows Explorer and choose "Tools → Folder Options → View (tab) → Show hidden files and folders". </p><p><b>On Windows Vista and above,</b> profile folders are in this location, by default: </p> <ul><li>C:\Users\<i><Windows login/user name></i>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile folder>.</li></ul> <p>The AppData folder is a hidden folder; to show hidden folders, open a Windows Explorer window and choose "Organize → Folder and Search Options → Folder Options → View (tab) → Show hidden files and folders". </p><p>You can also use this path to find the profile folder, even when it is hidden: </p> <ul><li>%APPDATA%\Mozilla\Firefox\Profiles\<profile folder></li></ul> <p><b>%APPDATA%</b> is a variable represents the <i>C:\Documents and Settings\<user name>Application Data</i> folder on Windows 2000/XP and the <i>C:\Users\<user name>\AppData\Roaming</i> folder on Windows Vista and above. </p> <div style="float: right; padding: 5px; margin-left: 1em;"><span class="mw-default-size" typeof="mw:File"><a href="/File:Appdata.png" class="mw-file-description"><img src="/images/Appdata.png" decoding="async" width="347" height="186" /></a></span></div> <p>To find a profile folder in the default location on Windows: </p> <ol><li>Press "Windows key <span class="mw-default-size" typeof="mw:File"><a href="/File:Windows_Key.png" class="mw-file-description"><img src="/images/Windows_Key.png" decoding="async" width="16" height="16" /></a></span> + R" to open the Run box <br /> (or, you can click "Start → Run..." on Windows 2000/XP)</li> <li>In the Run box, type in <b>%APPDATA%</b></li> <li>Click OK. A Windows Explorer window will appear.</li> <li>In this window, choose Mozilla → Firefox → Profiles.</li></ol> <p>Each folder in the "Profiles" folder (e.g., "xxxxxxxx.default") is a profile on your computer. </p><p><b>Windows Vista and above:</b> You can open the Run box to find the profile folder, as explained above, or you can open the Windows Start menu and use the Windows search box, as shown below on Windows Vista: </p> <dl><dd><span class="mw-default-size" typeof="mw:File"><a href="/File:VistaStartMenu.png" class="mw-file-description"><img src="/images/VistaStartMenu.png" decoding="async" width="479" height="293" /></a></span></dd></dl> <ol><li>Click the Start button or press the Windows <span class="mw-default-size" typeof="mw:File"><a href="/File:Windows_Key.png" class="mw-file-description"><img src="/images/Windows_Key.png" decoding="async" width="16" height="16" /></a></span> key to open the Start menu.</li> <li>In the search box, type in: <ul><li><b>%APPDATA%\Mozilla\Firefox\Profiles</b></li></ul></li> <li>Click on any of the profiles (e.g., xxxxxxxx.default) to open it with Windows Explorer.</li></ol> <h4><span class="mw-headline" id="Linux">Linux</span></h4> <p>Profile folders are located here: </p> <ul><li>~/.mozilla/firefox/<profile folder></li></ul> <p>The ".mozilla" folder is a hidden folder. See <a href="/Show_hidden_files_and_folders#Linux" title="Show hidden files and folders">this article</a> for more information. To show hidden files in Nautilus (Gnome desktop's default file browser), choose "View -> Show Hidden Files". </p> <h4><span class="mw-headline" id="Mac">Mac</span></h4> <p>Profile folders are in one of these locations: </p> <ul><li>~/Library/Application Support/Firefox/Profiles/<profile folder></li> <li>~/Library/Mozilla/Firefox/Profiles/<profile folder></li></ul> <p>The tilde character (~) refers to the current user's Home folder, so <i>~/Library</i> is the <i>/Macintosh HD/Users/<username>/Library</i> folder. </p><p>For OS X 10.7 Lion and above, the ~/Library folder is hidden by default. See <a href="/Show_hidden_files_and_folders#Mac_OS_X" title="Show hidden files and folders">this article</a> to make it appear. </p> <h3><span class="mw-headline" id="Other_methods_of_finding_a_profile">Other methods of finding a profile</span></h3> <h4><span class="mw-headline" id="File_search">File search</span></h4> <p>Specific files in profiles can be found by using the file and folder search feature of your operating system. This is also useful for finding profile folders that are not in the default location. In Windows 2000 and later, you must ensure that you're including hidden files and folders in the search, as detailed in <a href="/Show_hidden_files_and_folders#Searching_for_a_file" title="Show hidden files and folders">this article</a>. </p> <h4><span class="mw-headline" id="Using_the_JavaScript_or_Error_Console">Using the JavaScript or Error Console</span></h4> <p>You can use the following technique to find the location of the profile that you are currently using. This is useful, for example, if you are using a profile that is not in the default location. </p><p>From the Firefox menu bar, choose "Tools -> Error Console" (Firefox 2 and above) or "Tools -> JavaScript Console" (Firefox 1.5). Copy the following code. It is one very long line ending in <tt>path</tt>—make sure that you get all of it: </p> <dl><dd><code>Components.classes["@mozilla.org/file/directory_service;1"].getService( Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path</code></dd></dl> <p>In the Error Console or JavaScript Console window, paste the code in the field near the top. Click the Evaluate button. The console should display the location of the profile that is currently in use. If you don't see it, make sure you have the "All" button pushed. </p> <h4><span class="mw-headline" id="Using_an_Extension">Using an Extension</span></h4> <p>The easiest method is with an extension. <a rel="nofollow" class="external text" href="https://addons.mozilla.org/firefox/addon/545">Open Profile Folder</a> will open your current profile folder from "Tools" menu or toolbar button bringing it up with your system, or optionally with another application. </p> <h2><span class="mw-headline" id="Viewing_profile_directory_structure_from_above">Viewing profile directory structure from above</span></h2> <p>Up one directory from your profile is the <b>Profiles</b> directory which contains one or more profiles, and one directory above that is the <b>Firefox</b> directory which contains Crash Reports directory, Profiles directory, and profiles.ini file. The profiles.ini is a map of profiles used by the Profile Manager. </p> <h2><span class="mw-headline" id="Managing_profiles">Managing profiles</span></h2> <p>You can select a profile to use, create a new profile, and delete or rename an existing profile using the <a href="/Profile_Manager" title="Profile Manager">Profile Manager</a>. Profiles can become corrupted, in which case you need to <a href="/Profile_Manager#Creating_a_new_profile" title="Profile Manager">create a new profile</a> then <a href="/Transferring_data_to_a_new_profile_-_Firefox" title="Transferring data to a new profile - Firefox">transfer your data and settings to the new profile</a>. To safeguard your important data you should <a href="/Profile_backup" title="Profile backup">make a backup copy of up your profile</a>. </p><p>It is possible to change the location of the Firefox profile folder but you should read <a href="/Moving_your_profile_folder" title="Moving your profile folder">this article</a> for instructions. If you delete, rename or move the profile folder, Firefox may report that it is "already running, but is not responding" when you next start the application (<a rel="nofollow" class="external text" href="https://bugzilla.mozilla.org/show_bug.cgi?id=278860">bug 278860</a>). See <a href="/Profile_in_use#Check_the_profile_folder_name_and_location" title="Profile in use">this article</a> for more information. </p> <h2><span class="mw-headline" id="Files_and_folders_in_the_profile">Files and folders in the profile</span></h2> <p>None of these files should be write-protected ("read-only" or "locked"), which might be a side effect of backing up the profile to removable media and then restoring your profile from that media. Having read-only or locked files in the profile can result in serious profile issues, as described in <a href="/Multiple_profile_files_created" title="Multiple profile files created">this article</a>. </p><p>It's not recommended to edit these files directly. Instead, use their respective interfaces. The three files whose names begin with "user" are exceptions to this—they are designed to be edited directly. For more information on these three files, follow their links in the tables below. </p> <h3><span class="mw-headline" id="Folders">Folders</span></h3> <table border="2" cellpadding="4" cellspacing="0" style="margin: 1em 1em 1em 0; background: #fcfcfc; border: 1px #aaa solid; border-collapse: collapse;"> <tbody><tr> <th>Name </th> <th>Version </th> <th>Description </th></tr> <tr> <td><a href="/Bookmarkbackups_folder" title="Bookmarkbackups folder"> bookmarkbackups</a> </td> <td>1.5 and above </td> <td>Daily rotating backups of your bookmarks. </td></tr> <tr> <td>Cache </td> <td>Linux - all versions.<br /> Mac OS/Windows - previous to 1.5 </td> <td>Contains cached Internet files. Note: In 1.5 and above on Windows, only profiles in custom locations include the Cache folder. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=291033">[5]</a> Use <a href="/About_protocol_links" title="About protocol links">about:cache</a> to find the location. See <a href="/Browser.cache.disk.parent_directory" title="Browser.cache.disk.parent directory">browser.cache.disk.parent directory</a>. </td></tr> <tr> <td><a href="/Browser.cache.offline.enable" title="Browser.cache.offline.enable"> OfflineCache</a> </td> <td>3.0 and above, as noted </td> <td>Second disk cache for off-line usage. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=367447">[6]</a> Note: Only profiles in custom locations on Windows include the OfflineCache folder. Use <a href="/About_protocol_links" title="About protocol links">about:cache</a> to find the location. </td></tr> <tr> <td><a href="/Chrome_folder" title="Chrome folder">chrome</a> </td> <td>3.6 and below (?) </td> <td>Contains <a href="/UserChrome-example.css" title="UserChrome-example.css">userChrome-example.css</a>, <a href="/UserContent-example.css" title="UserContent-example.css">userContent-example.css</a>, and the optional <a href="/UserChrome.css" title="UserChrome.css">userChrome.css</a>, <a href="/UserChrome.js" title="UserChrome.js">userChrome.js</a>, and <a href="/UserContent.css" title="UserContent.css">userContent.css</a> user customization files. Note: The chrome folder is no longer created by default (as of Firefox 4?). <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=438248">[7]</a> <a rel="nofollow" class="external autonumber" href="https://developer.mozilla.org/en/Chrome_Registration">[8]</a>. </td></tr> <tr> <td>extensions </td> <td> </td> <td>Installed extensions </td></tr> <tr> <td><a href="/Browser.microsummary.updateGenerators" title="Browser.microsummary.updateGenerators"> microsummary-generators</a> </td> <td>2.0 and above </td> <td>Regularly-updated succinct compilations of the most important information on web pages. </td></tr> <tr> <td>minidumps </td> <td> </td> <td>For <a href="/Breakpad" class="mw-redirect" title="Breakpad">Crash Reporter</a> </td></tr> <tr> <td>searchplugins </td> <td>1.5 and above </td> <td>Contains search engine plugins and their icons for the <a href="/Search_Bar" title="Search Bar">Search Bar</a> </td></tr></tbody></table> <h3><span class="mw-headline" id="Files">Files</span></h3> <table border="2" cellpadding="4" cellspacing="0" style="margin: 1em 1em 1em 0; background: #fcfcfc; border: 1px #aaa solid; border-collapse: collapse;"> <tbody><tr> <th>Name </th> <th>Version </th> <th>Description </th></tr> <tr> <td>.autoreg </td> <td> </td> <td>Temporary empty file that signals a change in the installed extensions. </td></tr> <tr> <td>.parentlock (Mac OS X) </td> <td> </td> <td>See parent.lock </td></tr> <tr> <td>addons.json </td> <td>25.0 and above </td> <td>Stores AddonRepository data previously stored in addons.sqlite. <a rel="nofollow" class="external autonumber" href="https://mail.mozilla.org/pipermail/firefox-dev/2013-August/000717.html">[9]</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=853389">[10]</a> </td></tr> <tr> <td>addons.sqlite </td> <td>4.0 and above </td> <td>Stores <a rel="nofollow" class="external text" href="http://addons.mozilla.org">AMO</a> data for installed add-ons such as screenshots, ratings, homepage, and other details. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=586591">[11]</a> <a rel="nofollow" class="external autonumber" href="http://forums.mozillazine.org/viewtopic.php?f=23&p=9851195">[12]</a> <a rel="nofollow" class="external autonumber" href="https://support.mozilla.org/questions/794548">[13]</a> AddonRepository data migrated to addons.json in Firefox 25. <a rel="nofollow" class="external autonumber" href="https://mail.mozilla.org/pipermail/firefox-dev/2013-August/000717.html">[14]</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=853389">[15]</a> </td></tr> <tr> <td><a href="/Blocklist.xml" title="Blocklist.xml">blocklist.xml</a> </td> <td>2.0 and above </td> <td>Automatically downloaded list of <a rel="nofollow" class="external text" href="https://addons.mozilla.org/en-US/firefox/blocked/">blocked add-ons</a>. </td></tr> <tr> <td><a href="/Bookmarks.bak" title="Bookmarks.bak">bookmarks.bak</a> </td> <td>Previous to 3.0 </td> <td>Backup of bookmarks.html <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=218636">[16]</a> </td></tr> <tr> <td><a href="/Bookmarks.html" title="Bookmarks.html">bookmarks.html</a> </td> <td>Previous to 3.0 </td> <td><a href="/Bookmarks" title="Bookmarks">Bookmarks</a> </td></tr> <tr> <td><a href="/Bookmarks.html.moztmp" title="Bookmarks.html.moztmp">bookmarks.html.moztmp</a> </td> <td>Previous to 3.0 </td> <td>Temporary bookmarks file. If found, remove the 'read-only' attribute, as it results in creation of multiple numbered bookmarks-n.html files. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=157152">[17]</a> </td></tr> <tr> <td>bookmarks.postplaces.html </td> <td>3.0 (pre-release) </td> <td>Backup of bookmarks in 3.0 Beta 4 and below and in 3.0 nightly builds prior to 03-14-2008. No longer used in later 3.0 builds. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=406114">[18]</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=423082">[19]</a> </td></tr> <tr> <td><a href="/Bookmarks-(date).html" title="Bookmarks-(date).html"> bookmarks-<i>(date)</i>.html</a> in <a href="/Bookmarkbackups_folder" title="Bookmarkbackups folder">bookmarkbackups</a> </td> <td>Previous to 3.0 </td> <td>Daily rotating backups of your bookmarks. </td></tr> <tr> <td><a href="/index.php?title=Bookmarks-(date).json&action=edit&redlink=1" class="new" title="Bookmarks-(date).json (page does not exist)"> bookmarks-<i>(date)</i>.json</a> in <a href="/Bookmarkbackups_folder" title="Bookmarkbackups folder">bookmarkbackups</a> </td> <td>3.0 and above </td> <td>Daily rotating backups of your bookmarks. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=384370">[20]</a> </td></tr> <tr> <td>cert_override.txt </td> <td>3.0 and above </td> <td>Store certificate exceptions specified by the user. <a rel="nofollow" class="external autonumber" href="https://developer.mozilla.org/En/Cert_override.txt">[21]</a> </td></tr> <tr> <td>cert8.db </td> <td> </td> <td>Security certificates </td></tr> <tr> <td>compatibility.ini </td> <td> </td> <td>Stores version and path of the application this profile was last used with. When the profile is loaded with an application of a different version/path, the XPCOM components registration process is triggered. This file is automatically generated and can safely be deleted. </td></tr> <tr> <td>components.ini </td> <td>Previous to 1.5 </td> <td>Lists extension folders with XPCOM components. Replaced with extensions.ini in 1.5. </td></tr> <tr> <td>compreg.dat </td> <td> </td> <td>Lists registered XPCOM components. Automatically regenerated whenever XPCOM registration process is triggered. </td></tr> <tr> <td>content-prefs.sqlite </td> <td>3.0 and above </td> <td>Individual settings for pages. </td></tr> <tr> <td><a href="/Cookies.sqlite" title="Cookies.sqlite">cookies.sqlite</a> </td> <td>3.0 and above </td> <td><a href="/Cookies" title="Cookies">Cookies</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=230933">[22]</a> </td></tr> <tr> <td><a href="/Cookies.txt" title="Cookies.txt">cookies.txt</a> </td> <td>Previous to 3.0 </td> <td><a href="/Cookies" title="Cookies">Cookies</a> </td></tr> <tr> <td>cookies.txt.moztmp </td> <td>Previous to 3.0 </td> <td>Temporary cookies file. If found, remove the 'read-only' attribute or delete the file, as it results in <a href="/Multiple_cookies_files_created" class="mw-redirect" title="Multiple cookies files created"> multiple numbered cookies-n.txt files</a>. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=257288">[23]</a> </td></tr> <tr> <td>defaults.ini </td> <td>Previous to 1.5 </td> <td>Lists extension folders with <a href="/Dev_:_Using_preferences#Where_are_the_default_values_read_from" title="Dev : Using preferences">default pref files</a>. Replaced with extensions.ini in 1.5. </td></tr> <tr> <td>downloads.json </td> <td>26.0 and above </td> <td>Per-session download history (paused downloads). Note: long-term download history is stored in the Places database (see <a href="/Places.sqlite" title="Places.sqlite">places.sqlite</a>). <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=851466">[24]</a> </td></tr> <tr> <td><a href="/Downloads.rdf" title="Downloads.rdf">downloads.rdf</a> </td> <td>Previous to 3.0 </td> <td>Download history. Can be deleted to resolve slow downloads or hangs. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=159107">[25]</a> </td></tr> <tr> <td><a href="/index.php?title=Downloads.sqlite&action=edit&redlink=1" class="new" title="Downloads.sqlite (page does not exist)">downloads.sqlite</a> </td> <td>3.0 and above; Previous to 26.0 </td> <td>Download history. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=380250">[26]</a> Removed in Firefox 26.0. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=851466">[27]</a> </td></tr> <tr> <td>extensions.cache </td> <td>Previous to 4.0 </td> <td>Lists installed extensions, their IDs, and the folders they are installed to, along with their last-modify time. It is used, for example, to register extensions installed by dropping a folder into one of known install locations. This file is automatically regenerated and can be deleted to resolve various issues. </td></tr> <tr> <td>extensions.log </td> <td> </td> <td>? </td></tr> <tr> <td>extensions.ini </td> <td>1.5 and above </td> <td>Lists folders of installed extensions and themes. The file is automatically generated by <code>nsExtensionManager</code> and is used by low-level code to detect chrome packages and XPCOM components provided by installed addons. Can be deleted to resolve various issues. </td></tr> <tr> <td>extensions.json </td> <td>26.0 and above </td> <td>Stores XPIProvider data previously stored in extensions.sqlite. <a rel="nofollow" class="external autonumber" href="https://mail.mozilla.org/pipermail/firefox-dev/2013-August/000717.html">[28]</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=853388">[29]</a> </td></tr> <tr> <td>extensions.rdf </td> <td>Previous to 4.0 </td> <td>Installed extension information. Can be deleted to resolve various extension issues. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=319022">[30]</a> </td></tr> <tr> <td>extensions.sqlite </td> <td>4.0 and above </td> <td>Installed extension information. Can be deleted to resolve various extension issues. <a rel="nofollow" class="external autonumber" href="http://forums.mozillazine.org/viewtopic.php?p=10480589#p10480589">[31]</a> </td></tr> <tr> <td>extensions-startup.manifest </td> <td>1.5 alphas </td> <td>This file was used in Deer Park alphas and was later renamed to extensions.cache <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=297312#c17">[32]</a> </td></tr> <tr> <td>formhistory.dat </td> <td>Previous to 3.0 </td> <td>Saved form data </td></tr> <tr> <td>formhistory.sqlite </td> <td>3.0 and above </td> <td>Saved form data </td></tr> <tr> <td><a href="/History.dat" title="History.dat">history.dat</a> </td> <td>Previous to 3.0 </td> <td>Browsing history. Can be deleted to resolve various issues. </td></tr> <tr> <td><a href="/Hostperm.1" title="Hostperm.1">hostperm.1</a> </td> <td>Previous to 3.0 </td> <td>Per-site preferences for allowing <a href="/Cookies" title="Cookies">cookies</a> and popups. </td></tr> <tr> <td><a href="/Key3.db" title="Key3.db">key3.db</a> </td> <td> </td> <td>Key database </td></tr> <tr> <td>kf.txt </td> <td>2.0 </td> <td>Key database for phishing protection. </td></tr> <tr> <td><a href="/Localstore.rdf" title="Localstore.rdf">localstore.rdf</a> </td> <td>Previous to 34.0 </td> <td>Toolbar and window size/position settings. Can be deleted to resolve various issues. See <a href="/Corrupt_localstore.rdf" title="Corrupt localstore.rdf">Corrupt localstore.rdf</a>. Replaced by xulstore.json in 34.0 </td></tr> <tr> <td>localstore-safe.rdf </td> <td>1.5 and above </td> <td>Special version of localstore.rdf used in <a href="/Safe_Mode" title="Safe Mode">Safe Mode</a> to set toolbars and window customizations to defaults. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=303279">[33]</a> </td></tr> <tr> <td>lock (Linux) </td> <td> </td> <td>See parent.lock </td></tr> <tr> <td>logins.json </td> <td>32.0 and above </td> <td>Encrypted saved passwords <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=853549#c60">[34]</a> </td></tr> <tr> <td><a href="/MimeTypes.rdf" title="MimeTypes.rdf">mimeTypes.rdf</a> </td> <td> </td> <td>Action to perform when downloading certain types of files. Can be deleted to reset download actions. </td></tr> <tr> <td>parent.lock (Windows) </td> <td> </td> <td>Marker showing that the current <a href="/Profile_in_use" title="Profile in use"> profile is in use</a>. Can be deleted to unlock the profile. </td></tr> <tr> <td>permissions.sqlite </td> <td>3.0 and above </td> <td>Permission database for cookies, pop-up blocking, image loading and add-ons installation. </td></tr> <tr> <td><a href="/Persdict.dat" title="Persdict.dat">persdict.dat</a> </td> <td> </td> <td>Personal spelling <a href="/Dictionaries" title="Dictionaries"> dictionary</a>. </td></tr> <tr> <td><a href="/Places.sqlite" title="Places.sqlite">places.sqlite</a> </td> <td>3.0 and above </td> <td>Bookmarks, browsing and download history <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=370099">[35]</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=708595">[36]</a> </td></tr> <tr> <td>places.sqlite-journal </td> <td>3.0 and above </td> <td>temporary store of places.sqlite updates when Firefox is open. <a rel="nofollow" class="external autonumber" href="http://forums.mozillazine.org/viewtopic.php?f=38&t=832885">[37]</a> <a rel="nofollow" class="external autonumber" href="http://www.sqlite.org/atomiccommit.html#section_3_11">[38]</a> </td></tr> <tr> <td>places.sqlite-stmtjrnl </td> <td>3.0 and above </td> <td>? </td></tr> <tr> <td>pluginreg.dat </td> <td>3.0 and above </td> <td>Registration of plugin MIME types. Previous to 3.0, pluginreg.dat was located in the "Firefox" folder containing the profiles. </td></tr> <tr> <td><a href="/Prefs.js_file" title="Prefs.js file">prefs.js</a> </td> <td> </td> <td>All preferences. See: <a href="/About:config" title="About:config">about:config</a> </td></tr> <tr> <td>search.json </td> <td>3.5 and above </td> <td>Cache of search plugin data; used instead of parsing XML files to improve startup time. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=394979">[39]</a> <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=502202#c4">[40]</a> </td></tr> <tr> <td>search.rdf </td> <td>Previous to 2.0 </td> <td>Information about your search plugins </td></tr> <tr> <td>search.sqlite </td> <td>2.0 and above </td> <td>Information about your search plugins </td></tr> <tr> <td>secmod.db </td> <td> </td> <td>Security module database </td></tr> <tr> <td><a href="/Sessionstore.js" title="Sessionstore.js">sessionstore.js</a> </td> <td>2.0 and above </td> <td>Stored sessions </td></tr> <tr> <td><a href="/Signons.txt" title="Signons.txt">signons.txt</a> </td> <td>Previous to 1.5.0.10<br /> 2.x previous to 2.0.0.2 </td> <td>Encrypted saved passwords, requires key3.db to work </td></tr> <tr> <td><a href="/Signons2.txt" title="Signons2.txt">signons2.txt</a> </td> <td>1.5.x after 1.5.0.10<br />2.0.0.2 and above </td> <td>Encrypted saved passwords (and URL exceptions where "NEVER SAVE PASSWORD" is selected), requires key3.db to work <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=360493">[41]</a> </td></tr> <tr> <td><a href="/Signons3.txt" title="Signons3.txt">signons3.txt</a> </td> <td>3.0 and above </td> <td>Encrypted saved passwords (and URL exceptions where "NEVER SAVE PASSWORD" is selected), requires key3.db to work </td></tr> <tr> <td><a href="/index.php?title=Signons.sqlite&action=edit&redlink=1" class="new" title="Signons.sqlite (page does not exist)">signons.sqlite</a> </td> <td>3.5 and above, previous to 32.0 </td> <td>Encrypted saved passwords (and URL exceptions where "NEVER SAVE PASSWORD" is selected), requires key3.db to work. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=288040">[42]</a> </td></tr> <tr> <td>urlclassifier.sqlite or <a href="/Urlclassifier2.sqlite" title="Urlclassifier2.sqlite">urlclassifier2.sqlite</a> or urlclassifier3.sqlite </td> <td>2.0 and above </td> <td>Phishing and Attack site protection data. </td></tr> <tr> <td>urlclassifierkey3.txt </td> <td>3.0 and above </td> <td>Key database for phishing protection. </td></tr> <tr> <td><a href="/User.js_file" title="User.js file">user.js</a><br />(does not exist by default) </td> <td> </td> <td>User-set overriding preferences </td></tr> <tr> <td><a href="/UserChrome.css" title="UserChrome.css">userChrome.css</a> in <a href="/Chrome_folder" title="Chrome folder">chrome</a><br />(does not exist by default) </td> <td> </td> <td>User-set CSS to change the way the application looks </td></tr> <tr> <td><a href="/UserContent.css" title="UserContent.css">userContent.css</a> in <a href="/Chrome_folder" title="Chrome folder">chrome</a><br />(does not exist by default) </td> <td> </td> <td>User-set CSS to change the way webpages look </td></tr> <tr> <td><a href="/UserChrome.js" title="UserChrome.js">userChrome.js</a> in <a href="/Chrome_folder" title="Chrome folder">chrome</a><br />(does not exist by default) </td> <td> </td> <td>User-set JavaScript to change the way the application works </td></tr> <tr> <td><a href="/Webappsstore.sqlite" title="Webappsstore.sqlite">webappsstore.sqlite</a> </td> <td>2.0 and above </td> <td>DOM storage </td></tr> <tr> <td>xpti.dat </td> <td> </td> <td>Lists registered XPCOM interfaces. Automatically regenerated whenever XPCOM registration process is triggered. </td></tr> <tr> <td>XPC.mfasl (Linux) </td> <td> </td> <td>? </td></tr> <tr> <td>XPC.mfl (Windows) </td> <td> </td> <td>? </td></tr> <tr> <td>XPC FastLoad File (Mac OS X) </td> <td> </td> <td>? </td></tr> <tr> <td>XUL.mfasl (Linux) </td> <td> </td> <td>See XUL.mfl </td></tr> <tr> <td>XUL.mfl (Windows) </td> <td>Previous to 1.5 and as noted </td> <td>Cached user interface data. Can be deleted to resolve various issues. Note: In 1.5 and above, only profiles in custom locations contain XUL.mfl. See Cache folder for file location. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=291033">[43]</a> </td></tr> <tr> <td>XUL FastLoad File (Mac OS X) </td> <td> </td> <td>See XUL.mfl </td></tr> <tr> <td>xulstore.json </td> <td>34.0 and above </td> <td>Toolbar and window size/position settings (replaces localstore.rdf). <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=559505">[44]</a> </td></tr></tbody></table> <h3><span class="mw-headline" id="Files_without_specific_names">Files without specific names</span></h3> <table border="2" cellpadding="4" cellspacing="0" style="margin: 1em 1em 1em 0; background: #fcfcfc; border: 1px #aaa solid; border-collapse: collapse;"> <tbody><tr> <th>Name </th> <th>Version </th> <th>Description </th></tr> <tr> <td>*.src in searchplugins </td> <td>previous to 2.0 </td> <td>Search engine plugins for the <a href="/Search_Bar" title="Search Bar">Search Bar</a> </td></tr> <tr> <td>*.xml in searchplugins </td> <td>2.0 and above </td> <td>Search engine plugins for the <a href="/Search_Bar" title="Search Bar">Search Bar</a> </td></tr></tbody></table> <h3><span class="mw-headline" id="Files_and_folders_outside_the_profile_folder">Files and folders outside the profile folder</span></h3> <p>These files and folders are located in the "Firefox" folder (Windows and Mac) or "firefox" folder (Linux and Unix) containing the profiles. </p> <table border="2" cellpadding="4" cellspacing="0" style="margin: 1em 1em 1em 0; background: #fcfcfc; border: 1px #aaa solid; border-collapse: collapse;"> <tbody><tr> <th>Name </th> <th>Version </th> <th>Description </th></tr> <tr> <td>Crash Reports </td> <td>3.0 and above </td> <td>Crash report files for <a href="/Breakpad" class="mw-redirect" title="Breakpad">Breakpad</a>. </td></tr> <tr> <td>Desktop Background.bmp (Windows) </td> <td>1.5 and above </td> <td>Background image for the desktop set by Firefox. File is created when choosing "Set As Desktop Background..." in the context menu. <a rel="nofollow" class="external autonumber" href="https://bugzilla.mozilla.org/show_bug.cgi?id=260437">[45]</a> </td></tr> <tr> <td>pluginreg.dat </td> <td>Previous to 3.0 </td> <td>Registration of plugin MIME types. In 3.0 and above, pluginreg.dat is located in the profile folder. </td></tr> <tr> <td><a href="/Profiles.ini_file" title="Profiles.ini file">profiles.ini</a> </td> <td> </td> <td>Keeps track of profile location. Can be edited to point to a <a href="/Moving_your_profile_folder" title="Moving your profile folder">moved profile folder</a>. If deleted, profiles.ini will be regenerated along with a new default profile folder upon program restart. </td></tr> <tr> <td>registry.dat </td> <td>? </td> <td>Kept track of profile location in early Firefox versions (no longer used). </td></tr></tbody></table> <h2><span class="mw-headline" id="External_links">External links</span></h2> <ul><li><a rel="nofollow" class="external text" href="https://support.mozilla.org/kb/Profiles">Profiles (Firefox Support)</a></li></ul>    </div> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="http://kb.mozillazine.org/index.php?title=Profile_folder_-_Firefox&oldid=46741">http://kb.mozillazine.org/index.php?title=Profile_folder_-_Firefox&oldid=46741</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/Special:Categories" title="Special:Categories">Category</a>: <ul><li><a href="/Category:Profiles" title="Category:Profiles">Profiles</a></li></ul></div></div>  <div class="visualClear"></div> </div> </div> <div class="visualClear"></div> </div> <div id="column-one" > <h2>Navigation menu</h2> <div role="navigation" class="portlet" id="p-cactions" aria-labelledby="p-cactions-label"> <h3 id="p-cactions-label" >Page actions</h3> <div class="pBody"> <ul > <li id="ca-nstab-main" class="selected mw-list-item"><a href="/Profile_folder_-_Firefox" title="View the content page [c]" accesskey="c">Page</a></li><li id="ca-talk" class="mw-list-item"><a href="/Talk:Profile_folder_-_Firefox" rel="discussion" title="Discussion about the content page [t]" accesskey="t">Discussion</a></li><li id="ca-view" class="selected mw-list-item"><a href="/Profile_folder_-_Firefox">Read</a></li><li id="ca-viewsource" class="mw-list-item"><a href="/index.php?title=Profile_folder_-_Firefox&action=edit" title="This page is protected.
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