Inject content scripts no more than once
Automatically add content scripts to existing tabs when your extension is installed
High-level events and utilities for events in Web Extensions
Utility functions to inject content scripts in WebExtensions, for Manifest v2 and v3
An in-memory implementation of webextension-polyfill for testing. Supports all test frameworks (Vitest, Jest, etc)
Utilities for working with match patterns.
A set of utilities for building Redux applications in Web Extensions.
Isolate content script UI's styles from the parent page. Supports all browsers (Chrome, Firefox, Safari)
CLI tool to upload Chrome Extensions to the Chrome Web Store
TypeScript definitions for firefox-webext-browser
WebExtension module: Automatically registers your `content_scripts` on domains added via `permission.request` or on `activeTab`
Browser-action context menu to request permission for the current tab. Chrome, Firefox, Safari.
Wrapper around Mozilla’s web-ext to submit extensions to AMO.
Light weight, type-safe wrapper around the web extension messaging APIs. Supports all browsers (Chrome, Firefox, Safari)
Tool to convert the patterns and globs of your WebExtension manifest to regex
Schedule and run jobs in your background script
A type-safe wrapper around the web extension messaging APIs that lets you call a function from anywhere, but execute it in the background. Supports all browsers (Chrome, Firefox, Safari, etc)
A type-safe, localStorage-esk wrapper around the web extension storage APIs. Supports all browsers (Chrome, Firefox, Safari, etc)
Messaging in Web Extensions made easy. Out of the box.
A set of utilities for building Redux applications in Web Extensions.
Inject css at the top of chunk file in lib mode using `import` statement, support multiple entries.
Utility functions for Web Extensions
Cache values in your Web Extension and clear them on expiration. Also includes a memoize-like API to cache any function results automatically.
Helps you manage and autosave your extension's options, separately for each additional permission.