---
breadcrumbs:
- - /developers
  - For Developers
- - /developers/design-documents
  - Design Documents
page_name: extensions
title: Extensions
---

### Developers making extensions, see [Chrome Extensions Documentation](https://developer.chrome.com/extensions/index.html)

which includes reference documentation, samples, tutorials, FAQs, discussion
groups and even videos.

Chromium developers, you probably want to:

*   [Learn how the extension system was/is
            designed](/developers/design-documents/extensions/how-the-extension-system-works)
*   [Propose a new Extension
            API](/developers/design-documents/extensions/proposed-changes/apis-under-development)

{% subpages collections.all %}