mozilla/web-ext

Health v2 · maintenance only

Adoption not part of the score

3132 stars · 384 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

web-ext is Mozilla's command line tool for building, running, linting, signing, and testing WebExtensions. It streamlines Firefox extension development while aiming for portable, cross-browser extension support.

Use cases

• develop and hot-reload a Firefox extension while coding
• lint and validate web extension source for add-on store compliance
• package an extension into a zip for distribution
• sign an extension with Mozilla so it installs in Firefox
• test a browser extension against Firefox nightly from the command line
• integrate extension build steps into npm scripts or CI

When to choose

• you are developing a Firefox WebExtension or cross-browser add-on
• you want automated linting against Mozilla add-on policies
• you need to build, sign, and run extensions from CI or npm scripts

When to avoid

• you are building a native desktop app rather than a browser extension
• you need a GUI-based extension development environment
• your target is a browser with an incompatible extension API and no WebExtension support

Facets

cli-tool · maturity active

cli developer-tools linter build-tool testing browser-extensions developer-tools web-development cli cross-platform windows webextension firefox mozilla add-ons browser-extension-development npm command-line nodejs macos linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="mozilla/web-ext")