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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 12043 September 6, 2023
Please stop blocking Blue Blocker addon updates
addons.mozilla.org
feedback
6 149 October 9, 2024
Общие принципы создания apk-пакетов android
Firefox for Android Add-ons
2 18 October 9, 2024
Is it possible to conditionally open sidebar depending on var in storage.sync
Add-on Support
4 58 October 8, 2024
Dark theme_icons are ignored in Manifest v3 extension
Development
5 858 October 8, 2024
Engineering Effectiveness Newsletter (August & September 2024 Edition)
Firefox Tooling Announcements
1 14 October 8, 2024
How Thunderbird handle it's subject encryption?
Developer Community
1 12 October 8, 2024
Reinstating the Language Representative Program
Common Voice
8 397 October 8, 2024
Why are we no longer able to flag very bad ratings
addons.mozilla.org
24 1055 October 8, 2024
URLs are not allowed
addons.mozilla.org
2 124 October 8, 2024
Awaiting extension review for long time
Add-on Support
4 46 October 8, 2024
How to enable console.log from Service Worker?
Developer Tools
10 1449 October 8, 2024
WXT - "Next-gen Web Extension Framework"
Add-ons
2 55 October 7, 2024
Stuck awaiting review
Add-on Support
7 107 October 7, 2024
Where to post ideas for add-on writers I can't develop myself
addons.mozilla.org
3 67 October 6, 2024
Review cycle, how long in average?
addons.mozilla.org
2 56 October 5, 2024
NEW HERE? This forum is for Voice-AI Dataset Creation project called "Common Voice"
Common Voice
2 66 October 4, 2024
Where to post Idea's for add-on writers
Common Voice
feedback
2 58 October 4, 2024
Browser extension storage "get" return value if nothing found
Development
3 124 October 4, 2024
Will linking to .xpi preserve user tracking?
Add-on Support
1 50 October 4, 2024
Firefox built-in translator translates input element values
Developer Community
issue
1 48 October 4, 2024
An Important Update on Mozilla WebThings
WebThings
15 151854 October 4, 2024
FireFox uses 80% of my Ram
IAM
2 74 October 4, 2024
What is the best way to automatically test the functionality of addons (eg for Github Actions)
Add-ons
2 222 October 3, 2024
Content security policy blocking injecting styles into pages
addons.mozilla.org
2 80 October 3, 2024
Addon has been disabled
Add-on Support
3 82 October 3, 2024
How to keep the same internal UUID by installing a Firefox add-on in unlisted mode?
Add-ons
2 134 October 3, 2024
Add-on Review Questions
addons.mozilla.org
add-on-reviews
150 15822 October 3, 2024
How to Programmatically Configure FoxyProxy(Extension) in Firefox on Launch?
Add-on Support
1 52 October 3, 2024
Common Voice Toolbox: Beta testers and feature requests needed
Common Voice
feedback ,  tooling
13 1992 September 20, 2024