Quick Reference JSON Formatter

Browser Support

Cheat Sheets
Applications
Firefox Add-Ons

Firefox Add-Ons

Reference links and cheat sheets for Firefox Add-Ons.

Resources

Official & Reference

Firefox Add-ons
Extension Workshop
Official Website
Wikipedia Firefox Add-Ons

Developer cheat sheets, quick references and interactive tools — every entry linked to the official documentation.

Press Ctrl K to search everything.

Cheat Sheets

All cheat sheets
A–Z directory
Quick Reference
JavaScript
Python
SQL

Learn

CSS Grid
Flexbox
Git Branching
VS Code Shortcuts
Git commands

Tools

JSON Formatter
Markdown Editor
Regex Tester
HTML & CSS Abbreviations
Browser Support
Compare Browsers

Official docs

MDN Web Docs ↗
Python docs ↗
Git reference ↗
Baseline ↗
VS Code docs ↗

© 2026 coderef. Free developer reference.

Browser data from web-features & MDN. Trademarks belong to their owners.