{"id":9265,"date":"2025-10-23T03:57:39","date_gmt":"2025-10-23T10:57:39","guid":{"rendered":"https:\/\/blog.mozilla.org\/addons\/?p=9265"},"modified":"2025-11-05T17:40:18","modified_gmt":"2025-11-06T01:40:18","slug":"data-collection-consent-changes-for-new-firefox-extensions","status":"publish","type":"post","link":"https:\/\/blog.mozilla.org\/addons\/2025\/10\/23\/data-collection-consent-changes-for-new-firefox-extensions\/","title":{"rendered":"Announcing data collection consent changes for new Firefox extensions"},"content":{"rendered":"<p>As of November 3rd 2025, all <b>new<\/b> Firefox extensions will be required to <a href=\"https:\/\/extensionworkshop.com\/documentation\/develop\/firefox-builtin-data-consent\/#specifying-data-types\">specify if they collect or transmit personal data<\/a> in their <code>manifest.json<\/code> file using the <code>browser_specific_settings.gecko.data_collection_permissions key<\/code>. This will apply to new extensions only, and <b>not new versions of existing extensions<\/b>. Extensions that do not collect or transmit any personal data are required to specify this by setting the none required data collection permission in this property.<\/p>\n<p>This information will then be displayed to the user when they start to install the extension, alongside any permissions it requests.<\/p>\n<p><a href=\"https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install.460b7848.webp\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-9267 aligncenter\" src=\"https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install.460b7848-580x418.webp\" alt=\"Screenshot of example Firefox extension installation prompt showing data that the extension collects\" width=\"580\" height=\"418\" srcset=\"https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install.460b7848-580x418.webp 580w, https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install.460b7848.webp 601w\" sizes=\"(max-width: 580px) 100vw, 580px\" \/><\/a> <a href=\"https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install-no-transmission.66cdd978.webp\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-9266 aligncenter\" src=\"https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install-no-transmission.66cdd978-580x402.webp\" alt=\"Screenshot of example Firefox extension installation prompt showing that the extension claims it collects no data\" width=\"580\" height=\"402\" srcset=\"https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install-no-transmission.66cdd978-580x402.webp 580w, https:\/\/blog.mozilla.org\/addons\/files\/2025\/10\/data-collection-permissions-prompt-install-no-transmission.66cdd978.webp 651w\" sizes=\"(max-width: 580px) 100vw, 580px\" \/><\/a><\/p>\n<p>This information will also be displayed on the <a href=\"http:\/\/addons.mozilla.org\">addons.mozilla.org<\/a> page, if it is publicly listed, and in the <i>Permissions and Data<\/i> section of the Firefox about:addons page for that extension. If an extension supports versions of Firefox prior to 140 for Desktop, or 142 for Android, then the developer will need to continue to provide the user with a clear way to control the add-on\u2019s data collection and transmission immediately after installation of the add-on.<\/p>\n<p>Once any extension starts using these <code>data_collection_permissions<\/code> keys in a new version, it will need to continue using them for all subsequent versions. Extensions that do not have this property set correctly, and are required to use it, will be prevented from being submitted to <a href=\"http:\/\/addons.mozilla.org\">addons.mozilla.org<\/a> for signing with a message explaining why.<\/p>\n<p>In the first half of 2026, Mozilla will require all extensions to adopt this framework. But don\u2019t worry, we\u2019ll give plenty of notice via the add-ons blog. We\u2019re also developing some new features to ease this transition for both extension developers and users, which we will announce here.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As of November 3rd 2025, all new Firefox extensions will be required to specify if they collect or transmit personal data in their manifest.json file using the browser_specific_settings.gecko.data_collection_permissions key. This &hellip; <a class=\"go\" href=\"https:\/\/blog.mozilla.org\/addons\/2025\/10\/23\/data-collection-consent-changes-for-new-firefox-extensions\/\">Read more<\/a><\/p>\n","protected":false},"author":2014,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44,581,574,278886],"tags":[322948],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Announcing data collection consent changes for new Firefox extensions - Mozilla Add-ons Community Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.mozilla.org\/addons\/2025\/10\/23\/data-collection-consent-changes-for-new-firefox-extensions\/\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alan Byrne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2025\/10\/23\/data-collection-consent-changes-for-new-firefox-extensions\/\",\"url\":\"https:\/\/blog.mozilla.org\/addons\/2025\/10\/23\/data-collection-consent-changes-for-new-firefox-extensions\/\",\"name\":\"Announcing data collection consent changes for new Firefox extensions - 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