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…	4	5150	June 20, 2022
Extension development tools developer-tools Hi all, I’m excited to share some tools that community members have recently created to help with extension development. If you’ve built something that could be helpful to others, please let us know by replying to this …	6	8562	June 23, 2021
About the Development category	1	3170	May 21, 2015
Are content_scripts not automatically injected anymore with Manifest V3?	3	59	November 28, 2022
MV3 Extension not working	7	101	November 25, 2022
i18n.getMessage() does not work in real time (or so )? issue , learning	2	45	November 24, 2022
Problem with positioning and dimensions of window panels relatively to screen dimensions	3	189	November 20, 2022
TypeScript definitions for the Firefox ESR 102?	1	67	November 20, 2022
What's the most prudent way to ensure programmatical content script injections only happen once per site?	5	130	November 17, 2022
How to Sanitize URL	12	185	November 17, 2022
Does the sync storage (`browser.storage.sync`) serve as local storage for users who disabled syncing	4	109	November 16, 2022
Importmaps	7	118	November 15, 2022
Is "Check for updates" on the "about:addons" page broken in Firefox 107?	4	191	November 2, 2022
Content script not working unless page reloaded	2	113	November 5, 2022
Preparing Projects	5	128	November 2, 2022
Signed add-on doesn't work unless inspected	1	103	October 27, 2022
Unpackaged Internationalization	5	127	October 27, 2022
Host_permissions not allowing cors requests issue	2	141	October 23, 2022
How to and do i need to ensure message from my extension?	6	216	October 11, 2022
Execute a content script before popup has been clicked	5	147	October 21, 2022
What are those green dots under some addons in new Firefox Developer Edition 107?	2	144	October 19, 2022
Custom cursor with content script learning	4	125	October 19, 2022
Translators needed for Read Next - new Firefox extension!	1	105	October 17, 2022
Console doesn't display content script errors	15	7594	October 16, 2022
How to? get access to the mouse and click events learning	6	178	October 5, 2022
Problem with the flag button	1	89	October 10, 2022
Problem with custom shortcut and Linux/Ubuntu?	6	212	October 6, 2022
Can I load micro-frontend application inside the extension?	3	110	October 5, 2022
Is there a known workaround for undefined behavior in theme.reset()	2	248	October 4, 2022
Can add-ons override/modify Firefox shortcuts?	2	130	October 2, 2022

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…

4

5150

June 20, 2022

Extension development tools

developer-tools

Hi all, I’m excited to share some tools that community members have recently created to help with extension development. If you’ve built something that could be helpful to others, please let us know by replying to this …