mdn/webextension-examples
A collection of simple, complete, and installable example Firefox add-ons built using the WebExtensions API.
What is mdn/webextension-examples?
webextensions-examples is a repository of example browser extensions created using the WebExtensions API. It provides complete, working examples that demonstrate how to build browser add-ons that modify browser behavior or web page content. These examples serve as practical learning resources and starting points for developers creating their own extensions.
Developers learning to build browser extensions, particularly those targeting Firefox or cross-browser compatibility using the WebExtensions standard.
It offers real, working code examples maintained by Mozilla's Add-ons team, providing authoritative demonstrations of WebExtensions API usage that can be immediately tested and adapted for new projects.
Overview
Example Firefox add-ons created using the WebExtensions API
Use Cases
Best For
- Learning WebExtensions API through practical examples
- Starting a new browser extension project with working code
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