Firefox Source Docs

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
Bug Handling
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Firefox User Guide

Source Code Documentation

The Firefox Build System

Mach
Pushing to Try
Build System
Firefox CI and Taskgraph
Managing Documentation
Vendoring Third Party Components

Testing & Test Infrastructure

Automated Testing
Understanding Treeherder Results
Sheriffed intermittent failures
Turning on Firefox tests for a new configuration
Avoiding intermittent tests
Debugging Intermittent Test Failures
Testing Policy
Configuration Changes
Browser chrome mochitests
Chrome Tests
geckodriver
Test Verification
WebRender Tests
Mochitest
XPCShell tests
TPS
web-platform-tests
GTest
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Sanitizer
Performance Testing
Code coverage
Testing & Debugging Rust Code

AI Agent Tools

AI Agent Tools for Firefox Development

Releases & Updates

Mozilla Update Infrastructure
Watershed Updates
Desupport Updates
Update Verify

Localization & Internationalization

Internationalization
Localization

Firefox and Python

mozbase
Using third-party Python packages

Metrics Collected in Firefox

Firefox metrics

Firefox Source Docs

Firefox Front-end
Address Bar
UrlbarInput Reference
Report an issue / View page source

UrlbarInput Reference

class UrlbarInput(): The address bar input, backing the moz-urlbar custom element.

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