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Getting Started

  • Getting Set Up To Work On The Firefox Codebase

Working On Firefox

  • Working on Firefox
  • Bug Handling

Firefox User Guide

  • Firefox DevTools User Docs

Source Code Documentation

  • Firefox
  • DOM
  • Editor
  • Layout & CSS
  • Graphics
  • Processes, Threads and IPC
  • Firefox DevTools Contributor Docs
  • Toolkit
    • Add-on Manager
    • Background Task Mode
    • Crash Manager
    • Crash Reporter
    • Feature Gates
    • Search Service
    • Shield Recipe Client
    • Nimbus
    • Messaging System Schemas
    • Picture-in-Picture
    • Prompts
    • Subprocess Module
    • Telemetry
      • Getting started
      • Concepts
      • Data collection
      • Data documentation
      • Internals
      • Obsolete Documentation
        • UITelemetry data format (obsolete)
        • Firefox Health Report (Obsolete)
        • Hybrid Content Telemetry (obsolete)
        • “activation” ping (obsolete)
        • “core” ping (obsolete)
        • “deletion” ping (obsolete)
        • Ecosystem Telemetry (obsolete)
        • “optout” ping (obsolete)
    • Firefox on Glean (FOG)
    • Toolkit Modules
    • Toolkit Widgets
    • URL Classifier
    • WebExtensions API Development
    • Adding new words to the en-US dictionary
  • SpiderMonkey
  • Welcome to GeckoView’s documentation!
  • WebIDL
  • libpref
  • Networking
  • Remote Protocols
  • Services
  • File Handling
  • Firefox on macOS
  • Accessibility
  • Code quality
  • Writing Rust Code
  • Gecko Profiler
  • Performance
  • XPCOM
  • Network Security Services (NSS)

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
  • XPCShell tests
  • GTest
  • 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
  • »
  • Toolkit »
  • Telemetry »
  • Obsolete Documentation
  • View page source

Obsolete Documentation¶

  • UITelemetry data format (obsolete)
  • Firefox Health Report (Obsolete)
    • Architecture
    • Payload Format
    • Identifiers
  • Hybrid Content Telemetry (obsolete)
  • “activation” ping (obsolete)
  • “core” ping (obsolete)
  • “deletion” ping (obsolete)
  • Ecosystem Telemetry (obsolete)
  • “optout” ping (obsolete)
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