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Welcome to Pontoon Documentation

Pontoon is Mozilla's translation management system (TMS) — a web-based platform that enables the Mozilla localization community to translate, review, and manage strings for Mozilla's products and websites.

Pontoon specializes in community-driven open source localization, pulling strings directly from version control repositories (Git and Mercurial) and writing translations back automatically. It supports a wide range of localization file formats including Fluent, Gettext PO, XLIFF, .properties, DTD, and more.

Scope of this documentation

While most of this documentation applies to any Pontoon deployment, the Mozilla instance is used as the primary example. Some sections — particularly in the Admin Guide — are specific to Mozilla's deployment.

Who is this documentation for?

  • Localizers

    You're a contributor who translates and reviews strings in Pontoon.

    Localizer Guide

  • Admins & Project Managers

    You manage Pontoon's projects, locales, users, and configuration.

    Admin Guide

  • Developers

    You contribute to Pontoon's codebase or deploy your own instance.

    Developer Guide

I want to… Go to
Start translating a project How to Translate
Add a new project Adding a New Project
Add a new locale Adding a New Locale
Set up Pontoon locally for development Developer Setup
Deploy Pontoon to production Deployment

About Pontoon

Pontoon is developed and maintained by Mozilla and is available as open source software at github.com/mozilla/pontoon. The Mozilla instance is hosted at pontoon.mozilla.org.