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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 11781 September 6, 2023
Greetings from Alsacien team + question on Französisch Deutsch
Deutsch (de)
participation
1 1 September 9, 2024
How to stay on ESR 115 branch till March 2025?
Development
1 2 September 9, 2024
How long does it usually take for a submission to get approved?
Add-on Support
2 35 September 9, 2024
Page action crashed firefox
Development
3 27 September 9, 2024
"This add-on could not be installed because it appears to be corrupted"
Add-on Support
5 35 September 9, 2024
Does Firefox support canonical decompositions?
Firefox Development
1 24 September 8, 2024
Debug DoH heuristics
Developer Community
1 24 September 8, 2024
Test title
TTS (Text-to-Speech)
1 23 September 8, 2024
Waiting a long time for my extension review (SaveMyPhind)
Add-on Support
2 440 September 8, 2024
[Support] Tap To Tab - open links in new tab with a double click
Add-on Support
15 9366 September 8, 2024
Add Button for RTX Super Resolution
Firefox Development
1 25 September 7, 2024
Common voice sentences are the opposite of "common"
Common Voice
participation ,  sentence-collection ,  feedback ,  issue
28 3160 September 7, 2024
Förslag till att vi med ett intresse av Mozilla Sweden och öppen källkod ses på Lördag runt 13 vid Fern och Fika I Stockholm
Community Portal
11 956 September 6, 2024
Zimbra do not display mail body when AddOn BitWarden activated on MacOS
Add-on Support
1 52 September 6, 2024
How to detect an element which is editable by the user
Development
feedback
7 977 September 5, 2024
Does Firefox MV2 extension has a deprecation timeline?
Development
4 1324 September 5, 2024
How do I view the Frame rate chart in the performance tool?
Developer Tools
3 73 September 5, 2024
Help needed - 2 extensions with nearly identical functionality - rejected
Add-on Support
6 120 September 5, 2024
Speeding up Firefox for a special use-case
Development
1 67 September 5, 2024
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Firefox Nightly
2 46 September 5, 2024
Borderline and edge not overlapping
Themes
1 64 September 5, 2024
I have some questions as a Learning web development form beginner stage
MDN
learning
6 1095 September 5, 2024
Social time at meet-up 26/8/24
Community Ops
1 37 September 5, 2024
Bookmarks need to be compact
Firefox Nightly
issue
1 46 September 5, 2024
Unexpected Windows Magnifier view move when editing in the CSS side panel
Developer Tools
issue
3 75 September 4, 2024
Dumb Question but would like to know!
Themes
14 613 September 4, 2024
About:config missing
Firefox On Android
44 48505 September 4, 2024
Happy BMO Push Day! (20240903.1)
Firefox Tooling Announcements
1 122 September 4, 2024
Problems creating a NativeMessagingHost extension
Development
2 89 September 3, 2024