mdn/webextensions-examples

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Example Firefox add-ons created using the WebExtensions API

Stars: 4.5k
Forks: 2.6k
Open beginner issues: 0
Indexed issues: 15
Avg merge: 15h 27m
Merged PRs (30d): 3

Dominant language: JavaScript
License: MPL-2.0
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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15 open issues indexed

Add script-on-click example and related content Open

example

mdn/webextensions-examples#635 · 8 comments · 1 assignee · Opened May 12, 2026
[MV3 userScripts API] Is Firefox MV3 intentionally not supporting `browser.runtime.onMessage`? Why? Open

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

mdn/webextensions-examples#612 · 5 comments · 1 reaction · Opened Dec 9, 2025
Add a data consent example Open

effort: medium example needs info on hold p2

mdn/webextensions-examples#606 · 4 comments · 1 assignee · Opened Nov 6, 2025
favourite-colour does not save Open

idle needs triage

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

mdn/webextensions-examples#569 · 2 comments · Opened Nov 2, 2024
devtools-panels example broken with manifest v3 Open

idle needs triage

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

mdn/webextensions-examples#562 · 1 comment · Opened May 20, 2024
Firefox Load temporary addon not working Open

idle

Difficulty 3/5 1-2 days Newbie friendliness 25/100

mdn/webextensions-examples#538 · 14 comments · Opened Aug 24, 2023
MV3 example for getting data from page/content script/activeTab context into action / popup Open

idle needs triage

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

mdn/webextensions-examples#533 · 3 comments · Opened Jul 13, 2023
Update eslint, fix linting errors and integrate in CI Open

enhancement idle

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

mdn/webextensions-examples#525 · Opened May 16, 2023
examples.json should include a way to list significant manifest keys Open

enhancement idle

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

mdn/webextensions-examples#524 · Opened May 12, 2023
Manifest v3 examples needed Open

example

mdn/webextensions-examples#496 · 6 comments · 12 reactions · 1 assignee · Opened Aug 2, 2022
Theme-integrated-sidebar doesn't support dark mode or theme_experiment. Open

example idle on hold

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

mdn/webextensions-examples#480 · 2 comments · Opened Nov 25, 2021
Update execCommand use in context-menu-copy-link-with-types Open

effort: medium enhancement idle on hold p2

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

mdn/webextensions-examples#543 · 2 comments · Opened Sep 16, 2021
Travis hook to verifies new directories in examples.json Open

enhancement idle

mdn/webextensions-examples#411 · 2 comments · 1 assignee · Opened May 1, 2019
Remove example extensions that depend on npm Open

example idle needs info on hold

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

mdn/webextensions-examples#398 · 5 comments · Opened Jan 4, 2019
Create an issue template Open

enhancement idle

Difficulty 1/5 Under an hour Newbie friendliness 48/100

mdn/webextensions-examples#316 · 1 comment · Opened Nov 24, 2017

mdn/webextensions-examples

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