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 … Read more
In a previous blog post I explained that we’re working to streamline the data consent experience for extensions and allow users to consent to sharing data with extensions directly in … Read more
Exciting news: with yesterday’s release of Firefox 138, tab groups are now available to all users! Tab groups have been a long standing feature request for users, so it’s wonderful … Read more
Greetings extension developers! We wanted to highlight this just-published blog post from our AI team where they share some exciting news – we’re shipping a new experimental ML API in … Read more
With the release of Firefox 128 comes additional Manifest V3 improvements as the engineering team continues to make cross-browser compatibility work a key focus, especially related to content scripts and … Read more
Greetings add-on developers! We wanted to provide an update on some exciting engineering work planned for the next few Firefox releases in support of Manifest V3. The team continues to … Read more
Calling all extension developers! With Manifest V3 picking up steam again, we wanted to provide some visibility into our current plans as a lot has happened since we published our … Read more
We recently identified a bug in the addons.mozilla.org (AMO) external API that caused all signing requests to mark extension submissions as being Android compatible. A fix for this bug will … Read more
The declarativeNetRequest (DNR) extension API is now available to all extensions starting from Firefox 113, released last week. Extensions with functionality that can be expressed in terms of declarative rules … Read more