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# Firefox Developer Tools: Contributor Docs

Note: This is a guide to working on code contributions to DevTools. If you're looking for help with using the tools, view the [user docs](https://developer.mozilla.org/en-US/docs/Tools) instead. For other ways to get involved, see our [community site](https://firefox-dev.tools).

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**Hello,** and thanks for your interest in contributing to Firefox DevTools!

DevTools is a complex web app, but if you're familiar with either HTML/CSS or JavaScript, you can create a patch!

The initial setup process of building Firefox can take a while. If you get stuck at any point, you can ask for help on the [DevTools Slack](https://devtools-html-slack.herokuapp.com/).

We all make lots of errors when we get started, so don't worry about that—there are safeguards in place to ensure that any commits that land in the Firefox repository are peer-reviewed, can be built, and pass the tests in multiple configurations and operating systems.