mozilla/web-ext

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A command line tool to help build, run, and test web extensions

Stars: 3.1k
Forks: 386
Open beginner issues: 0
Indexed issues: 193
Avg merge: 8h
Merged PRs (30d): 19

Dominant language: JavaScript
License: MPL-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: hacktoberfest

Beginner friendly Everything

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193 open issues indexed

npm audit failures: image-size and js-yaml Open

Difficulty 3/5 1-2 days Newbie friendliness 62/100

mozilla/web-ext#3806 · 2 comments · 1 reaction · Opened Aug 13, 2026
The error message is cryptic Open

priority: enhancement

Difficulty 3/5 1-2 days Newbie friendliness 38/100

mozilla/web-ext#3636 · 2 comments · Opened Mar 3, 2026
Unpredictable checksum Open

contrib: good first bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

mozilla/web-ext#3613 · 9 comments · Opened Feb 3, 2026
Custom App icons create new alias that web-ext cannot find Open

mozilla/web-ext#3607 · 4 comments · 1 assignee · Opened Jan 29, 2026
Stop generating a fresh JWT for each polling request when signing, and poll with exponential backoff Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

mozilla/web-ext#3572 · 2 comments · Opened Dec 12, 2025
package.json webExt section doesn't support global options for commands Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mozilla/web-ext#3571 · 3 comments · Opened Dec 8, 2025
KEY_FIREFOX_ANDROID_UNSUPPORTED_BY_MIN_VERSION warning though gecko_android is not set Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

mozilla/web-ext#3561 · 4 comments · 1 reaction · Opened Nov 22, 2025
Warn about missing browser_specific_settings.gecko.id in the manifest.json on `web-ext run` commands targeting Firefox Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

mozilla/web-ext#3547 · Opened Nov 6, 2025
`web-ext run --firefox-binary /bin/librewolf --verbose` fails to load addon with `connection error: Error: connect ECONNREFUSED 127.0.0.1:38085` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mozilla/web-ext#3473 · 8 comments · Opened Jul 19, 2025
A reload now triggers infinite reloading in Chrome Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

mozilla/web-ext#3468 · 11 comments · 1 reaction · Opened Jul 11, 2025
Chrome policy RemoteDebuggingAllowed:false calls devTools ECONNREFUSED error Open

state: blocked by upstream

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mozilla/web-ext#3433 · 3 comments · Opened May 28, 2025
--api-proxy is ignore when signing Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mozilla/web-ext#3413 · 4 comments · Opened May 7, 2025
Integrate with Firefox's new profile manager Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mozilla/web-ext#3408 · 1 comment · Opened May 5, 2025
If starting `web-ext run` opens Firefox with an update pending, then `web-ext` won't quit after closing Firefox Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mozilla/web-ext#3386 · 2 comments · 1 reaction · Opened Mar 28, 2025
Port the usage of the RDP protocol over to WebDriver BiDi Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

mozilla/web-ext#3351 · 4 comments · Opened Feb 12, 2025
cannot make linter ignore specific rules Open

contrib: welcome

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

mozilla/web-ext#3333 · 4 comments · Opened Jan 18, 2025
Error testing addon with web-ext in Android. Unable to retrieve current user Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mozilla/web-ext#3315 · 2 comments · Opened Nov 29, 2024
`run.target: ["chromium"]` ignored in config Open

contrib: welcome type: bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

mozilla/web-ext#3314 · 8 comments · Opened Nov 28, 2024
UsageError message could be more helpful: "Cannot use... auto-generated extension ID" Open

Difficulty 1/5 Under an hour Newbie friendliness 50/100

mozilla/web-ext#3309 · 1 comment · Opened Nov 22, 2024
Opera never been used but advertised as Keyword in Package.json Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

mozilla/web-ext#3278 · 2 comments · Opened Oct 18, 2024
Adding `chromium-android` to `run` Open

contrib: welcome priority: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 30/100

mozilla/web-ext#3259 · 4 comments · Opened Sep 26, 2024
Sign/submit the extension ZIP without building Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

mozilla/web-ext#3242 · 4 comments · Opened Sep 7, 2024
Dependency cleanup Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

mozilla/web-ext#3216 · 1 comment · 4 reactions · Opened Aug 4, 2024
Linting error EXTENSION_ID_REQUIRED for v3 extension targeted towards Chromium Open

Difficulty 4/5 3-5 days Newbie friendliness 40/100

mozilla/web-ext#3213 · 1 comment · Opened Aug 2, 2024
web-ext run starts Firefox with many non-standard prefs set for no good reason Open

type: bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

mozilla/web-ext#3176 · 1 comment · 3 reactions · Opened Jun 20, 2024
"AMO API base URL" must be specified even though docs say it has a default Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

mozilla/web-ext#3164 · 1 comment · Opened Jun 7, 2024
Firefox does not quit after Ctrl-C when using web-ext run Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

mozilla/web-ext#3134 · 4 comments · Opened May 17, 2024
When `keepProfileChanges` specified, the extension is unable to connect Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mozilla/web-ext#3133 · 2 comments · Opened May 17, 2024
[feature] Shell completion Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

mozilla/web-ext#3115 · Opened Apr 23, 2024
Unable to Test Spotify with Chromium, Missing Components Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

mozilla/web-ext#3093 · 1 comment · Opened Mar 31, 2024
Re-introduce informative CI jobs covering nodejs experimental versions Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mozilla/web-ext#3015 · Opened Jan 12, 2024
watchFile to support directory as well Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

mozilla/web-ext#2997 · Opened Dec 26, 2023
Print message to emphasize the need to grant host permissions when a MV3 extension is loaded Open

contrib: good first bug contrib: welcome

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

mozilla/web-ext#2980 · 2 comments · 4 reactions · Opened Dec 7, 2023
Microsoft Edge reinstalls extensions after using web-ext Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

mozilla/web-ext#2979 · 1 comment · Opened Dec 5, 2023
Re-opening tab developer console after addon reload (brainstorming) Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

mozilla/web-ext#2965 · 5 comments · Opened Nov 22, 2023
web-ext submit: Source code submission failure should not result in the signed xpi getting lost Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

mozilla/web-ext#2952 · 1 comment · 1 reaction · Opened Nov 13, 2023
Support enable-background-service-worker option Open

contrib: welcome

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mozilla/web-ext#2916 · 9 comments · 1 reaction · Opened Oct 17, 2023
Pass in custom chromium prefs (enable developer mode by default) Open

contrib: assigned

mozilla/web-ext#2899 · 6 comments · 1 assignee · Opened Oct 3, 2023
`run` is slow to re-upload the extension to the device Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

mozilla/web-ext#2898 · Opened Sep 30, 2023
Don't allow the same source file to be submitted for subsequent versions Open

component: signing priority: p2

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mozilla/web-ext#2892 · Opened Sep 26, 2023
Add argument to specify firefox remote debugger port Open

contrib: welcome

Difficulty 3/5 1-2 days Newbie friendliness 38/100

mozilla/web-ext#2891 · 1 comment · Opened Sep 25, 2023
Run arbitrary chromium-based flatpak browsers (Ungoogled Chromium) Open

needs: info

Difficulty 3/5 1-2 days Newbie friendliness 38/100

mozilla/web-ext#2886 · 2 comments · Opened Sep 21, 2023
Option to automatically pin installed extension Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

mozilla/web-ext#2874 · 3 comments · 11 reactions · Opened Sep 11, 2023
Disable "no-unsanitize" linter rules Open

component: linting contrib: welcome priority: enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

mozilla/web-ext#2800 · 2 comments · 1 reaction · Opened Jul 3, 2023
Allow to disable Firefox Android checks Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

mozilla/web-ext#2685 · 1 comment · Opened Mar 20, 2023
security issues in v7 dependencies Open

component: signing state: blocked by upstream

Difficulty 3/5 1-2 days Newbie friendliness 35/100

mozilla/web-ext#2678 · 13 comments · 2 reactions · Opened Mar 20, 2023
[Feature] Specify `manifest.json` path Open

state: wontfix

Difficulty 4/5 3-5 days Newbie friendliness 42/100

mozilla/web-ext#2653 · 4 comments · Opened Feb 22, 2023
Add alias for Firefox ESR (-f esr) Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

mozilla/web-ext#2627 · 1 comment · Opened Jan 31, 2023
DX for Chrome (devtools and browser console) Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

mozilla/web-ext#2580 · 2 comments · 10 reactions · Opened Dec 28, 2022
Remove support for `mv3` value in `--firefox-preview` CLI flag on the `web-ext run` command Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

mozilla/web-ext#2563 · Opened Nov 24, 2022

mozilla/web-ext

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