{"id":422,"date":"2024-02-12T00:05:36","date_gmt":"2024-02-12T00:05:36","guid":{"rendered":"https:\/\/serverhost.com\/blog\/unveiling-tab-previews-a-new-feature-in-progress-by-firefox-developers\/"},"modified":"2025-02-11T06:20:50","modified_gmt":"2025-02-11T06:20:50","slug":"unveiling-tab-previews-a-new-feature-in-progress-by-firefox-developers","status":"publish","type":"post","link":"https:\/\/serverhost.com\/blog\/unveiling-tab-previews-a-new-feature-in-progress-by-firefox-developers\/","title":{"rendered":"Unveiling Tab Previews: A New Feature in Progress by Firefox Developers"},"content":{"rendered":"<p><p>Tab previews are being prepared for a forthcoming iteration of Mozilla Firefox.<\/p>\n<p>At present, in Firefox versions, you position your cursor over a non-active tab (essentially, any tab that you&#8217;re not currently looking at) to see a tooltip that includes the webpage title after a brief pause.<\/p>\n<p>This is quite useful, particularly if you have a large number of tabs open, several of which are from the same website, and you cannot see enough of the page title in the tab itself to identify which page it is. <\/p>\n<p>However, Mozilla developers are testing a major improvement in the form of <strong>tab previews<\/strong> in the newest Firefox beta versions.<\/p>\n<\/p>\n<p><p>When this feature is enabled, tab tooltips adopt a new \u2018card\u2019 design that shows a large thumbnail preview of each webpage, the website\/webpage title, and the page URL:<\/p>\n<\/p>\n<p><p><a href=\"https:\/\/149366088.v2.pressablecdn.com\/wp-content\/uploads\/2024\/02\/firefox-tab-preview-hover.jpg\" rel=\"nofollow noopener\" target=\"_blank\">Preview Link<\/a><\/p>\n<\/p>\n<p><p>Top: default tooltips; bottom: tab previews enabled<\/p>\n<\/p>\n<p><p>Firefox\u2019s tab previews work with every tab except from the current\/active one, including pinned tabs (where this feature could prove particularly useful given they only show a favicon).<\/p>\n<\/p>\n<p><p>As this flag\/switch is <strong>not enabled by default<\/strong> in current Firefox beta builds we shouldn\u2019t expect to find tab previews in Firefox 123 when it\u2019s released as a stable update later this month. <\/p>\n<\/p>\n<p><p>But the fact Firefox devs are working on this feature is encouraging. <\/p>\n<p>Other modern web browsers, including Google Chrome, Vivaldi, and Safari (though that\u2019s not available on Linux) also show thumbnail previews when users mouse over non-active browser tabs. <\/p>\n<p>It\u2019s understandable that Firefox would wish to follow suit.<\/p>\n<p>That said, some folks find these visually-rich tooltips distracting, so I hope Mozilla choose to include a toggle to disable tab previews in Firefox if \u2014 and for now it is still an \u2018if\u2019 \u2014 it decides to enable them by default in a future release.<\/p>\n<\/p>\n<p><h2>Enable Tab Previews in Firefox 123 Beta<\/h2>\n<\/p>\n<p><p>To try this out you need to set this switch to \u2018true\u2019<\/p>\n<\/p>\n<p><p>To try this experimental feature you need to have the latest beta build of Mozilla Firefox.<\/p>\n<\/p>\n<p><p>If you\u2019re on Ubuntu you can <a href=\"https:\/\/www.omgubuntu.co.uk\/2023\/12\/mozilla-firefox-beta-developer-edition-debs\" rel=\"nofollow noopener\" target=\"_blank\">install Firefox beta from Mozilla\u2019s APT repo<\/a>, download a binary from the Firefox website, or use the beta channel in the Snap Store.<\/p>\n<\/p>\n<p><p>Begin by opening Firefox Beta, then follow these steps:<\/p>\n<ul>\n<li><strong>Navigate to<\/strong> <code>about:config<\/code><strong> in a fresh tab.<\/strong><\/li>\n<li><strong>Look for the<\/strong> <code>browser.tabs.cardPreview.enabled<\/code> <strong>flag.<\/strong><\/li>\n<li><strong>Double-tap on the line in order to set it to<\/strong> <code>true<\/code><strong>. If there&#8217;s an icon at the end of the line, you may click on it.<\/strong><\/li>\n<\/ul>\n<p>Once it&#8217;s activated, it&#8217;s ready to be used, there&#8217;s no need for a browser restart.<\/p>\n<p>If you&#8217;d rather not have web page thumbnails appear in the new tab cards, you have the option to disable them by flipping the <code>browser.tabs.cardPreview.showThumbnails<\/code> switch to <code>false<\/code>. <\/p>\n<\/p>\n<p><p>To control how fast\/slow tooltips appear modify <code>browser.tabs.cardPreview.delayMs<\/code>.  This is set to 1000 (milliseconds) by default, meaning tooltips only appear once you\u2019ve hovered over a tab for at least a second. <\/p>\n<p><em>via <a href=\"https:\/\/www.soeren-hentzschel.at\/firefox\/firefox-bekommt-tabvorschau\/\" rel=\"nofollow noopener\" target=\"_blank\">soeren-hentzschel.at<\/a><\/em><\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tab previews are being prepared for a forthcoming iteration of Mozilla Firefox. At present, in Firefox versions, you position your cursor over a non-active tab (essentially, any tab that you&#8217;re not currently looking at) to see a tooltip that includes the webpage title after a brief pause. This is quite useful, particularly if you have [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":423,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58,4],"tags":[],"class_list":["post-422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-firefox","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Firefox Tab Previews: A New Feature In Progress serverhost<\/title>\n<meta name=\"description\" content=\"Firefox developers are working on a tab preview feature, allowing users to quickly view and switch between tabs using visual previews for better multitasking.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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