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…	6	6116	March 6, 2023
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	8885	June 23, 2021
About the Development category	1	3255	May 21, 2015
Need an add-on that can override websites that won't allow form-fill options	1	18	March 21, 2023
Can someone develop an add-on that does multiple tab rows	1	16	March 21, 2023
Gesture translate	1	22	March 20, 2023
Unable to access the HTML & CSS in the sidebar	3	39	March 20, 2023
How to open Google search results in the sidebar	13	140	March 7, 2023
SQLite and OPFS not working in Firefox extension	5	126	March 19, 2023
Firefox fails to install extension for local search service	6	85	March 18, 2023
I've got problems with the storage	8	81	March 16, 2023
Privacy and Accessing a database keyed by domain name development , privacy-and-security	3	306	March 14, 2023
How to access and modify the local storage of a page	3	61	March 11, 2023
Prompt not displaying	3	59	March 9, 2023
MV3 and Customizable Action Icon and Title manifest-v3	16	134	March 8, 2023
How do you get type hinting for webext APIs in VSCode without using bundlers?	5	120	March 8, 2023
Protocol handler extension for WebDAV	1	55	March 7, 2023
How to detect "privacy.resistFingerprinting"	3	79	March 5, 2023
Iframe with local src is being blocked	5	120	March 2, 2023
Container Tab Groups: Memory leak with User Agent overrides enabled	6	149	March 1, 2023
MV3 browser.scripting.executeScript throws Missing host permission for the tab	3	91	February 28, 2023
Chrome.tabs.query crash	4	90	February 27, 2023
Onboarding-page force-close before you have read it (with MV3 it becomes a critical issue I think) manifest-v3	4	173	February 27, 2023
Can't install my extension on android from store	4	89	February 26, 2023
Can menus have hotkey?	7	193	February 24, 2023
Help with message passing from background to content script	13	159	February 24, 2023
3rd party library must link to exact code	1	57	February 24, 2023
DOM haggling with open shadowroots in the way fails mmiserably	2	58	February 23, 2023
Move Tabs, missing permissions?	8	309	February 23, 2023
runtime.OnInstalledReason	6	102	February 23, 2023

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…

6

6116

March 6, 2023

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 …