# Install web-ext with npm

A command line tool to help build, run, and test web extensions. Version 10.5.0 via npm; verified 2026-07-10. Also installable with nix: nix profile install nixpkgs#web-ext.

## Install

```sh
sudo av install npm:web-ext
```

Additional install commands:

### Portable and language managers

- npm (100%):

```sh
npm install -g web-ext
```

  Evidence: local npm package metadata

## Package facts

- **Package key:** npm:web-ext
- **Package manager:** npm
- **Package manager page:** <https://www.npmjs.com/package/web-ext>
- **Version:** 10.5.0
- **Source summary:** A command line tool to help build, run, and test web extensions
- **Homepage:** <https://github.com/mozilla/web-ext>
- **Repository:** <https://github.com/mozilla/web-ext>
- **Upstream docs:** <https://github.com/mozilla/web-ext>
- **License:** MPL-2.0
- **Source archive:** <https://registry.npmjs.org/web-ext/-/web-ext-10.5.0.tgz>
- **Issue tracker:** <http://github.com/mozilla/web-ext/issues>
- **Published:** 2026-07-10T08:55:43.313Z
- **Last updated:** 2026-07-10T08:55:43.313Z
- **Generated:** 2026-08-04T22:13:35+00:00

## Executables

- web-ext (cli)

## Dependencies

- @babel/runtime
- @devicefarmer/adbkit
- addons-linter
- camelcase
- chrome-launcher
- debounce
- decamelize
- es6-error
- firefox-profile
- fx-runner
- https-proxy-agent
- jose
- jszip
- multimatch
- open
- parse-json
- pino
- promise-toolbox
- source-map-support
- strip-bom
- strip-json-comments
- tmp
- update-notifier
- watchpack
- yargs
- zip-dir

## Build dependencies

- @babel/cli
- @babel/core
- @babel/eslint-parser
- @babel/preset-env
- @babel/register
- @eslint/compat
- @eslint/eslintrc
- @eslint/js
- babel-plugin-istanbul
- chai
- chai-as-promised
- copy-dir
- crc-32
- cross-env
- deepcopy
- eslint
- eslint-plugin-import
- fs-extra
- git-rev-sync
- globals
- mocha
- nyc
- prettier
- pretty-quick
- prettyjson
- shelljs
- sinon
- testdouble
- yauzl

## Install behavior

- Post-install hook: not defined
- Bottle: not available

## Freshness

- Page generated: 2026-08-04
- Package-manager version: 10.5.0
- Package-manager updated: 2026-07-10
- Local data: ok
- Upstream repository: https://github.com/mozilla/web-ext
- info: No cached GitHub release or tag data was available.

## Security Notes

No matching local secret-handling manifest was found for web-ext. Package metadata is still published here so future coverage has a stable package URL.


## Source Database Details

- **Source Database:** npm registry
- **Dist Tags:** Latest: 10.5.0
- **Version Count:** 102
- **Maintainers:** addons-robot
- **Author:** Kumar McMillan
- **Publisher:** addons-robot
- **Engines:** Node: >=20.0.0, npm: >=8.0.0
- **Integrity:** sha512-tveUHhZHu5A2Qrs7u+hbh2S+7ZPuKVH/ILzqkRwpdivFOnVmgPhDLtmtGNKT3a8N9PZbW5uP6INe6Byj5qePVQ==
- **Shasum:** 41772c8ebe2b438332bb37150cd008301175704b
- **Unpacked Size:** 549,559
- **File Count:** 0
- **Created At:** 2016-02-01T18:11:12.794Z
- **Latest Published At:** 2026-07-10T08:55:43.313Z
- **Modified At:** 2026-07-10T08:55:43.418Z

## Other Package-Manager Records

- Nix - web-ext: normalized package name match | nixpkgs package indexes: pkgs/by-name/we/web-ext/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- MacPorts - web-ext: normalized package name match | MacPorts ports tree: devel/web-ext/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1


## Related links

- [Developer build packages](https://pkg.so/developer-build-tools/) - Matched curated package taxonomy and local package facts.
- [web-ext](https://pkg.so/brew/web-ext/) - Same normalized package name appears in another local ecosystem. Shared terms: browser, browser-extensions, build, cli, developer.
- [addons-linter](https://pkg.so/brew/addons-linter/) - Local package facts share a topical domain. Shared terms: add, add-ons, addons, addons-linter, browser.
- [cy2](https://pkg.so/npm/cy2/) - Local metadata places this package in an adjacent workflow. Shared terms: agent, cli, developer, developer-tools, https.
- [web-ext](https://pkg.so/brew/web-ext/) - Same normalized package name exists in another local package ecosystem.

## Sources

- pkg.so package database
- package-page enrichment
- package version freshness
- pkgdb category and tag curation
- package relationship graph
- external package-manager database matches
- cross-ecosystem install command graph