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Get started with Firefox extension development
Development

Extensions provide a simple and powerful way to personalize your browsing experience. If you know JavaScript, CSS, and HTML, you can build your own. If you are brand-new to add-on development, you can get started by che…

6 7785 September 6, 2023
Welcome, Android extension devs!
Firefox for Android Add-ons
4 112 September 25, 2023
Assessment wanted for the Flexbox: Task 1, 2, 3 & 4
Learn
4 317 September 26, 2023
Stop Firefox munching memory - HOW!?!
Firefox Development
8 487 September 26, 2023
Different plugin versions on different languages?
Add-on Support
3 39 September 26, 2023
Assessment wanted for HTML Structuring a page of content
Learn
2 50 September 26, 2023
Sätze hören mitten im Wort auf
Deutsch (de)
4 96 September 25, 2023
Move Firefox notification bar to bottom or add option to hide it
Firefox Development
1 26 September 25, 2023
Help wanted in making a extension
Development
learning
2 51 September 25, 2023
Assessment wanted for Other controls 1, 2 & 3 skill test
Learn
1 32 September 25, 2023
Bitwarden add-on broken
addons.mozilla.org
2 40 September 25, 2023
Assessment wanted for floats skill test 3
Learn
1 35 September 25, 2023
NS_BINDING_ABORTED - why browser unexpectedly transform POST request to GET request
Firefox Development
3 62 September 24, 2023
Container tabs and multi-account containers_ interdependent?
Firefox Development
2 37 September 24, 2023
How to return to the original appearance?
Thunderbird
3 99 September 24, 2023
Copyright violation issues on Korean sentences
Common Voice
sentence-collection
1 34 September 24, 2023
[EDITED] Error: Permission denied to access property "then"
Development
manifest-v3 ,  issue
2 66 September 24, 2023
Assessment wanted for Typesetting acommunity school homepage
Learn
3 273 September 24, 2023
Minimise on close
Add-ons
2 113 September 24, 2023
SpamBee - Spam Emails
Add-ons
2 45 September 24, 2023
** READ ME NOW - before you post here in discourse - READ ME NOW **
Thunderbird
4 401 September 24, 2023
How to use NotificationBox with Thunderbird?
Development
2 74 September 24, 2023
React Training course in Hyderabad
DeepSpeech
1 25 September 23, 2023
Propelling WebAssembly Integration: A Call for Augmented Security & Privacy Measures
Firefox Development
feedback
1 26 September 22, 2023
New user interface
Thunderbird
4 59 September 22, 2023
Nextcloud Passman addon for Android
Firefox for Android Add-ons
1 61 September 22, 2023
Please improve the way host permissions are requested and granted in Manifest v3 (puzzle icon)
addons.mozilla.org
manifest-v3
2 87 September 20, 2023
Add-on reverted to a 2-year-old version, huge breaking changes for our users
Add-on Support
1 96 September 20, 2023
How could I get more costumer TTS results based on pretrained models?
TTS (Text-to-Speech)
1 38 September 20, 2023
OneNote Web Clipper extension has been removed from Firefox
Add-ons
6 1552 September 19, 2023