Development

Topic	Replies	Views	Activity
Get started with Firefox extension 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…	5	14129	September 6, 2023
About the Development category	0	4448	May 21, 2015
Is it possible to access native workspaces/desktops?	1	16	May 15, 2025
"Media resource could not be decoded" in extensions learning , issue	9	47	May 13, 2025
Distributing Unlisted extesnion via direct link	2	34	May 8, 2025
Use of "autofocus" in popup.html not consistent	1	25	May 6, 2025
Initial tabs.hide() warning dialog	3	32	May 5, 2025
Manifest V3 issues for my extension	6	56	May 4, 2025
File input doesn't trigger "change" event in options UI on Android	2	33	April 30, 2025
How do you debug issues related to going idle? (mv3) manifest-v3	4	31	April 30, 2025
Suggested alarms / linux suspend workarounds?	2	32	April 30, 2025
Loading and displaying remote HTTP images in an extension learning , issue	2	48	April 29, 2025
Options_ui open_in_tab removes Options tab in about:addons?	1	32	April 28, 2025
If, on Android, "chrome_settings_overrides" is not supported, there is no way to add a custom search engine? search	3	1295	April 22, 2020
An addon to colour every tab individually	1	34	April 22, 2025
Test and debug extension on Android	1	20	April 21, 2025
Search function for buying products from Non-Profits/Charities learning	1	26	April 19, 2025
Search.query() practically doesn't work, presumably due to CSP when sending POST request	4	42	April 18, 2025
awaiting review for addon issue	3	53	April 14, 2025
Picture in Picture API?	4	56	April 13, 2025
Change specific cursor with addon learning	1	24	April 7, 2025
Modifying/Removing CSP header V3 learning , issue	3	56	April 2, 2025
<all_urls> doesn't grant access to all urls upon installation	5	73	April 2, 2025
Content Encoding Error	0	13	March 26, 2025
onBeforeRequest Blocking & Redirecting issue	0	35	March 25, 2025
Menu context "page_action" in an MV3 extension	1	32	March 23, 2025
Feedback gathering: Firefox Devloper Tools for Add-ons	1	32	March 18, 2025
People never trust mozilla or slimbrowser again!	3	97	March 16, 2025
Race condition when updating addon overriding New tab page	9	79	March 13, 2025
Absolute/relative position of FF UI urlbar	0	30	March 12, 2025

Get started with Firefox extension 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…