Super-lightweight Promised wrapper around `chrome.*` API to be used in modules. Prefer `webextension-polyfill` if you’re using it directly in an extension.

Cache values in your Web Extension and clear them on expiration. Also includes a memoize-like API to cache any function results automatically.

Automatically add content scripts to existing tabs when your extension is installed

Create a simple options page and bind to webext-pref.

webext-buildtools builder for deploying to Firefox Addons store and signing xpi files

A set of utilities for building Redux/Zustand/Mobx/etc applications in Web Extensions.

Extremely minimal stylesheet/setup for Web Extensions’ options pages (also dark mode)

RPC Messaging in Web Extensions made easy and type safe. Out of the box.

Turns surface specific browser APIs into unified transport layer

WebExtensions schemas fetched from hg.mozilla.org

WebExtension module: Automatically registers your `content_scripts` on domains added via `permission.request` or on `activeTab`

alert() for background pages/workers in Web Extensions

webext-buildtools builder for packing and signing Chrome Web Extension for offline distribution

Schedule and run jobs in your background script

Helps you manage and autosave your extension's options.

WebExtension module: Useful fixes and workarounds for browser extension shortcomings

Zustand adapter to share state between pages and background in web extensions.

Base webext-buildtools builders types definitions

webext-buildtools builder for packing extension directory to zip and reading manifest

WebExtension module: Simple message handler