Firefox Source Docs

Getting Started

Getting Set Up To Work On The Firefox Codebase

Working On Firefox

Working on Firefox
Bug Handling

Source Code Documentation

Firefox
DOM
Editor
Layout & CSS
Graphics
Firefox DevTools Contributor Docs
Toolkit
SpiderMonkey
Welcome to GeckoView’s documentation!
WebIDL
libpref
Networking
Remote Protocol
Services
File Handling
Firefox on macOS
Code quality
Writing Rust Code
Gecko Profiler
Performance
XPCOM

The Firefox Build System

Mach
Pushing to Try
Build System
TaskCluster Task-Graph Generation
Managing Documentation

Testing & Test Infrastructure

Testing Policy
Configuration Changes
Marionette
geckodriver
web-platform-tests documentation
Fuzzing
Sanitizer
Performance Testing
Code coverage
Testing & Debugging Rust Code

Localization & Internationalization

Internationalization
Localization

Firefox and Python

mozbase
Using third-party Python packages

Metrics Collected in Firefox

Metrics

Firefox Source Docs

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Metrics
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Metrics¶

The metrics collected by Firefox using the Glean SDK are documented in The Glean Dictionary.

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