Add-ons   Development

Introduction to Add-on Development ( 2 ) (30)
Extension development tools (4)

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 …

About the Development category (1)
Match a Fragment identifier in a URL (2)
Focus sidebar when it opens, and other things (9)
Conditional Creation of Context Menus (8)
Use of browserSettings not behaving the way doc describes (4)
Tabular Array of Arguments: Nomenclature and Best Practices? (11)
Moz-extension protocol is not accepted by Firebase. Any workarounds? (3) - Convert a GreaseMonkey userscript to a WebExtension (1)
XMLHttpRequest Challenge with first Add-on (4)
Execute content script on window after popup docked (5)
Docs unclear on whether unlimitedStorage can be an optional permission (2)
[Solved] Fetching data cross-domain? (3)
Install an extension next time firefox launches (2)
Addon only works on localhost (4)
Question about exporting add-on codes to some sort of drag/drop or clickable installation (4)
Add-on for print / save direcly in pdf or png an active tab in a specific folder (15)
Automatic offline backups of addon data (7)
Error: Could not establish connection. Receiving end does not exist (3)
Addon update in Firefox (4)
Accessing local storage from content_script page (3)
PageAction.setIcon on Firefox for Android (4)
Homepage override unexpected behavior (10)
Problem with info.selectionText of contextMenus.onShown (1)
Reading Multiline, Word, and HTML Data From the Clipboard ( 2 ) (30)
Alternative Ways to Do Large Context Menus (2)
How to detect the Customize tab in add-on (11)
Pass info,tab through Shortkey/command listener like with a context menu listener ( 2 ) (27)
Content scripts work in Chrome but not Firefox? (3)