Extension.js

Create, develop, build, and preview browser extensions for Chrome, Firefox, and Edge.

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README.md

The cross-browser extension framework

Extension.js provides a single workflow to create, develop, build, and preview cross-browser extensions. Build browser extensions for Chromium, Chrome, Edge, and Firefox.

Get started: Create a new extension with npx extension@latest create my-extension.
Read the docs: Learn the workflow, APIs, and core concepts.
Browse examples: Start from examples for common extension patterns.

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extension.js extension.js Public

The cross-browser extension framework.

TypeScript 5.1k 131
extension.js.org extension.js.org Public

Documentation, guides, and API reference for Extension.js.

MDX 10 16
examples examples Public

Browser extension examples and templates for common patterns.

JavaScript 10 4
.github .github Public

Organization profile, community health files, and shared defaults for Extension.js.

1

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Type Language Sort

examples Public
Browser extension examples and templates for common patterns.

extension-js/examples's past year of commit activity

JavaScript 10 MIT 4 0 0 Updated Aug 20, 2026
extension.js Public
The cross-browser extension framework.

extension-js/extension.js's past year of commit activity

TypeScript 5,064 MIT 131 5 1 Updated Aug 19, 2026
extension.js.org Public
Documentation, guides, and API reference for Extension.js.

extension-js/extension.js.org's past year of commit activity

MDX 10 MIT 16 1 0 Updated Aug 19, 2026
.github Public
Organization profile, community health files, and shared defaults for Extension.js.

extension-js/.github's past year of commit activity

0 1 0 0 Updated Jul 23, 2026