Guides

Note

This documentation is for extensions for the legacy version of Microsoft Edge. For information on the new Microsoft Edge, see Microsoft Edge (Chromium) Extensions.

Important

The new Microsoft Edge program is now open to accept chromium-based extensions for the new Microsoft Edge (v77 or later). If you want to submit a new extension, visit Publish to Microsoft Edge (Chromium) Add-ons Store to learn about the submission process.

With this announcement, Microsoft is no longer accepting new extensions for the legacy version of Microsoft Edge. If you own an Extension for the legacy version, you should begin the process of porting your Extension to the new Microsoft Edge. The new Microsoft Edge is based on Chromium, so Extensions designed for the legacy version of Microsoft Edge do not work with the new version.

Accessibility

To ensure your extension's icon is visible while in both light and dark mode, follow the accessibility guide.

Adding and removing extensions

Learn how to add and remove extensions, as well as move an extension's button next to the address bar.

Creating an extension

Get started with creating extensions by following a couple tutorials and learning the basics.

Debugging extensions

With F12 Developer Tools, learn how to debug an extension's background script, content scripts, and extension pages.

Design

Learn about the design aspects of extensions including the various icon sizes you need and where these icons appear.

Internationalization

Make your extension accessible for different languages and test your language strings with the internationalization guide.

Packaging

Once you've completed your extension, learn about the final steps needed to package it.

Porting Chrome extensions

See how to easily port your Chrome extension to Microsoft Edge using the Microsoft Edge Extension Toolkit.