Firefox Source Tree Documentation

Getting Started

• Getting Set Up To Work On The Firefox Codebase

Working On Firefox

• Working on Firefox
  • Firefox Contributors’ Quick Reference
  • Editor / IDE integration
  • Getting reviews
  • Mercurial Overview
  • Mercurial Bundles
  • Firefox Source Code Directory Structure
  • Understanding Artifact Builds
  • Firefox for Mobile Devices
• Bug Handling
  • Guides
  • Policies
  • Processes
  • Related documentation

Source Code Documentation

• Firefox
  • Address Bar
  • Browser Usage Telemetry
  • Enterprise Policies
  • Form Autofill
  • Firefox Home (New Tab)
  • Installer
  • Default Browser Agent
  • Messaging System
  • SSL Error Reporting
  • tabbrowser
  • Touch Bar
  • UITour
  • WebPayments UI
• DOM
  • Fission
  • DOM Workers & Storage
• Layout & CSS
  • AccessibleCaret
• Graphics
  • Graphics Overview
  • Layers History
  • Off Main Thread Painting
  • Asynchronous Panning and Zooming
  • Advanced Layers
  • Silk Overview
• Firefox DevTools Contributor Docs
  • Getting Started
  • Contributing
  • Automated tests
  • Files and directories
  • Tool Architectures
  • Frontend
  • Backend
  • Preferences
  • About this documentation
• Toolkit
  • Add-on Manager
  • Crash Manager
  • Crash Reporter
  • Feature Gates
  • Search Service
  • Shield Recipe Client
  • Prompts
  • Subprocess Module
  • Telemetry
  • Firefox on Glean (FOG)
  • Toolkit Modules
  • Toolkit Widgets
  • URL Classifier
  • WebExtensions API Development
• SpiderMonkey
  • Building SpiderMonkey
  • Debugger API
  • SavedFrame
• Welcome to GeckoView’s documentation!
  • Using GeckoView
  • API Documentation
  • More information
• WebIDL
  • Overview
  • WebIDL source file flavors
  • Producing C++ code
  • Requirements
• libpref
  • High-level design
  • Low-level details
• Remote Protocol
  • Usage
  • Preferences
  • Internals
  • Bugs
  • Communication
• Services
  • Remote Settings
• File Handling
  • URI Loader Service
  • External Helper App Service
• Firefox on macOS
  • Using macOS APIs
  • A primer on macOS SDKs
• Code quality
  • Static analysis
  • Linting
  • Coding style
• Writing Rust Code
  • Basics
  • Rust/C++ interop
  • XPCOM components in Rust

The Firefox Build System

• Mach
• Try Server
• Build System
• TaskCluster Task-Graph Generation
• Managing Documentation

Testing & Test Infrastructure

• Marionette
• geckodriver
• web-platform-tests documentation
• Fuzzing
• Sanitizer
• Performance Testing
• mozperftest
• Code coverage
• Testing & Debugging Rust Code

Localization & Internationalization

• Internationalization
  • Locale management
  • UI Internationalization
  • ICU
• Localization
  • Localization
  • Fluent
  • Migrating Strings From Legacy or Fluent Files
  • Cross-channel
  • Glossary

Firefox and Python

• mozbase
• Using third-party Python packages

Indices and tables

• Index

• Module Index

• Search Page