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Overview

  • A Glossary of Common Terms
  • A Quick Guide to Mozilla Applications

Getting Started

  • Getting Set Up To Work On The Firefox Codebase

Working On Firefox

  • Working on Firefox
    • Firefox Contributors’ Quick Reference
    • Working with stack of patches Quick Reference
    • Making a patch series reviewable
    • Phabricator vs GitHub
    • Pocket Guide: Shipping Firefox
    • Editor / IDE integration
    • Getting reviews
    • Levelling up
    • How to submit a patch
    • Data Collection
    • Data Review
    • Searchfox
    • Firefox AI Coding Policy
    • Introduction to Jujutsu
    • Git Tricks
    • Code Review FAQ
    • Reviewer Checklist
    • Debugging Firefox
      • Debugging Firefox with GDB
      • Debugging Firefox with LLDB
      • Debugging Firefox with rr
      • Debugging Firefox with Pernosco
      • Debugging Firefox with Valgrind
      • Debugging On macOS
      • Debugging On Windows
      • Debugging A Hang On macOS
      • Debugging WebRTC Calls
      • Understanding Crash Reports
      • Capturing a minidump
      • Debugging A Minidump
      • How to get a process dump with Windows Task Manager
      • How to get a stacktrace for a bug report
      • How to get a stacktrace with WinDbg
      • Symbolicating TreeHerder stacks locally
    • Configure Development Certificate
    • Signing Local macOS Builds
    • Firefox Source Code Directory Structure
    • Understanding Artifact Builds
    • Firefox for Mobile Devices
    • Working with ESR115
    • Engineering Show and Tell
    • Filing good bugs
    • Helpful error messages for web developers
  • Bug Handling
  • Firefox Crash Reporting

Firefox User Guide

  • 3D view
  • about:debugging
  • Accessibility Inspector
  • Application
  • Browser Console
  • Browser Toolbox
  • Custom Formatters
  • The Firefox JavaScript Debugger
  • Debugger-API
  • Deprecated tools
  • DevTools API
  • DevToolsColors
  • DOM Property Viewer
  • Eyedropper
  • Index
  • JavaScript Tracer
  • JSON viewer
  • All keyboard shortcuts
  • Local Mode
  • Measure a portion of the page
  • Memory
  • Migrating from Firebug
  • Network Monitor
  • Page Inspector
  • Performance Tool
  • Responsive Design Mode
  • Rulers
  • Settings
  • Shader Editor
  • Storage Inspector
  • Style Editor
  • Taking screenshots
  • Tips
  • Toolbox
  • Validators
  • View Source
  • Web Audio Editor
  • Web Console
  • Working with iframes
  • Firefox DevTools User Docs

Source Code Documentation

  • Governance
  • Firefox Front-end
  • DOM
  • Editor
  • Style system (CSS) & Layout
  • Graphics
  • Processes, Threads and IPC
  • Getting started
  • Architecture overview
  • Contributing
  • Bugs and issues
  • Firefox DevTools Contributor Docs
  • Toolkit
  • SpiderMonkey
  • JS Loader
  • GeckoView
  • Fenix
  • Focus for Android
  • WebIDL
  • libpref
  • Networking
  • Remote Protocols
  • Services
  • Permissions
  • File Handling
  • Firefox on macOS
  • Firefox on Windows
  • Firefox AI Runtime
  • Accessibility
  • Media Playback
  • Code quality
  • Writing Rust Code
  • Rust Components
  • Gecko Profiler
  • Performance
  • Database bindings (SQLite, KV, …)
  • XPCOM
  • NSPR