web-platform-tests/wpt

View on GitHub

Test suites for Web platform specs — including WHATWG, W3C, and others

Stars: 6.2k
Forks: 3.9k
Open beginner issues: 7
Indexed issues: 1.5k
Avg merge: 1d 6h
Merged PRs (30d): 586

Dominant language: HTML
License: No license data
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

Open All

1,505 open issues indexed

Sissy for me wife Open

Difficulty 5/5 Over a week Newbie friendliness 1/100

web-platform-tests/wpt#62818 · Opened Sep 19, 2026
M Open

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

web-platform-tests/wpt#62781 · Opened Sep 18, 2026
Incorrect references for CSS2 table-overflow reftests s-11-1-1b-002 through 004 Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

web-platform-tests/wpt#62635 · Opened Sep 11, 2026
css/css-fonts/standard-font-family-20.html is invalid Open

type:bug

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

web-platform-tests/wpt#62623 · Opened Sep 11, 2026
Create WEB_FEATURES.yml for Test262 import Open

infra third_party

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

web-platform-tests/wpt#62573 · Opened Sep 9, 2026
BFCache restoration can drop load event entirely Open

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

web-platform-tests/wpt#62561 · 2 comments · Opened Sep 9, 2026
No way to serve static page content for remote context helper? Open

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

web-platform-tests/wpt#62559 · Opened Sep 9, 2026
Color type quantization inaccuracy in WPT Open

Difficulty 1/5 Under an hour Newbie friendliness 84/100

web-platform-tests/wpt#62525 · Opened Sep 8, 2026
wdspec: bidi_session fixture swallows setup failures, reporting them as bare StopAsyncIteration Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

web-platform-tests/wpt#62500 · Opened Sep 7, 2026
Connect the repo to Reviewable Open

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

web-platform-tests/wpt#62496 · Opened Sep 7, 2026
credential-management: "rejects when aborted after the promise creation" contradicts sibling subtests in the same files Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

web-platform-tests/wpt#62415 · 2 comments · Opened Sep 3, 2026
Pkapp.konvex.xyz Open

Difficulty 5/5 Over a week Newbie friendliness 1/100

web-platform-tests/wpt#62413 · Opened Sep 3, 2026
window-open-204-pushState-replaceState.html uses the wrong history object Open

Difficulty 1/5 Under an hour Newbie friendliness 92/100

web-platform-tests/wpt#62386 · Opened Sep 2, 2026
Many Taskcluster jobs fail due to downloads causing errors/timeouts Open

ci infra Taskcluster

Difficulty 4/5 3-5 days Newbie friendliness 52/100

web-platform-tests/wpt#62364 · Opened Sep 1, 2026
Marketing Open

Difficulty 5/5 Over a week Newbie friendliness 1/100

web-platform-tests/wpt#62305 · Opened Aug 30, 2026
GeZsK Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

web-platform-tests/wpt#62267 · Opened Aug 28, 2026
New Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

web-platform-tests/wpt#62244 · Opened Aug 27, 2026
testharness.js: assert_throws_dom's QuotaExceededError-by-name guard reads name before it is assigned Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

web-platform-tests/wpt#62114 · 2 comments · Opened Aug 21, 2026
WebCodecs: VideoFrame(CanvasImageSource) deterministically mutates some explicit timestamps by -1 µs Open

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

web-platform-tests/wpt#61977 · Opened Aug 16, 2026
Test262 no longer being updated Open

infra third_party

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

web-platform-tests/wpt#61924 · 4 comments · Opened Aug 13, 2026
fix(wptrunner): report Chromium headless runs as headless Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

web-platform-tests/wpt#61827 · Opened Aug 8, 2026
Edge runs semi-regularly failing, on wptserve shutdown, after issues near start-up Open

Azure Pipelines infra

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

web-platform-tests/wpt#61770 · Opened Aug 5, 2026
Safari WebDriver results dramatically incomplete / wdspec not restarting the browser Open

infra wptrunner

Difficulty 5/5 Over a week Newbie friendliness 32/100

web-platform-tests/wpt#61616 · Opened Jul 29, 2026
`./wpt install-android-emulator` (without `--debug`) drops the user into a pdb prompt when a JRE isn't installed Open

infra wpt

web-platform-tests/wpt#61503 · 1 comment · 1 assignee · Opened Jul 23, 2026
[css-inline-3] Is text-box-trim-half-leading-block-box-003.html incorrectly counting phantom line boxes? Open

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

web-platform-tests/wpt#61079 · 7 comments · Opened Jul 6, 2026
payment-request tests depend on removed basic-card support Open

web-platform-tests/wpt#61068 · 3 comments · 1 assignee · Opened Jul 3, 2026
Adds missing coverage for circle/ellipse/rect on attribute values. Open

web-platform-tests/wpt#61017 · 1 assignee · Opened Jul 1, 2026
`*.any.js` / `.window.js` crashtests Open

dom fetch IndexedDB infra manifest permissions priority:backlog streams WebCryptoAPI

Difficulty 4/5 3-5 days Newbie friendliness 55/100

web-platform-tests/wpt#60972 · 1 comment · Opened Jun 29, 2026
Support for inertial scroll through test_driver.Actions Open

infra testdriver.js type:untestable

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

web-platform-tests/wpt#60724 · 1 comment · Opened Jun 18, 2026
test262 update PRs don’t trigger the GHA jobs Open

GitHub Actions infra

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

web-platform-tests/wpt#60613 · 2 comments · Opened Jun 13, 2026
Regression checks issue: Safari handling of changes to web-extension-helper.js Open

infra web-extensions

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

web-platform-tests/wpt#60670 · 3 comments · Opened Jun 12, 2026
Add tests for ElementInternals role being used as the implicit role for ARIA presentational roles conflict resolution Open

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

web-platform-tests/wpt#60563 · 1 comment · Opened Jun 11, 2026
[css-color] `epsilon` in `fuzzy_test_computed_color` obscures too many implementation issues. Open

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

web-platform-tests/wpt#60524 · 7 comments · Opened Jun 10, 2026
Upstream fuzzy annotations from WebKit changes in `css/css-backgrounds` Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

web-platform-tests/wpt#60511 · Opened Jun 9, 2026
[css-mixins] Need tests for multiple parameters Open

css-mixins

Difficulty 3/5 1-2 days Newbie friendliness 72/100

web-platform-tests/wpt#60407 · Opened Jun 4, 2026
`css/selectors/is-where-parsing.html` has a `test_invalid_selector` for a supposed malformed selector Open

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

web-platform-tests/wpt#60369 · Opened Jun 3, 2026
`navigation-api/ordering-and-transition/currententrychange-before-popstate-intercept.html` asserts the wrong thing Open

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

web-platform-tests/wpt#60358 · 3 comments · Opened Jun 3, 2026
Navigation API scroll tests incorrectly assume that reloads will persist state Open

navigation-api

web-platform-tests/wpt#60113 · 2 comments · 1 assignee · Opened May 22, 2026
Should we delete obsolete `PerformanceTiming` interface Open

navigation-timing

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

web-platform-tests/wpt#60039 · 2 comments · Opened May 21, 2026
CI failure: /infrastructure/testdriver/bidi/emulation/set_touch_override.https.html on mac Open

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

web-platform-tests/wpt#59894 · Opened May 15, 2026
idlharness tests should generate reflection tests based on [Reflect] Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

web-platform-tests/wpt#59848 · Opened May 13, 2026
SVG tref element used in WPT tests needs to be removed. Open

svg

Difficulty 3/5 1-2 days Newbie friendliness 72/100

web-platform-tests/wpt#59812 · 3 comments · Opened May 12, 2026
Picture In Picture disablePictureInPicture attribute tests Open

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

web-platform-tests/wpt#59722 · 1 comment · Opened May 7, 2026
Consider updating Docker image Open

infra

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

web-platform-tests/wpt#59665 · Opened May 5, 2026
Missing python version failures in infrastructure CI Open

infra Taskcluster

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

web-platform-tests/wpt#59664 · 1 comment · Opened May 5, 2026
Unable to run WebNN suite via https://wpt.live/tools/runner/index.html - browser remains stuck on test manifest message Open

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

web-platform-tests/wpt#59625 · 1 comment · Opened May 4, 2026
When is allowed to consider metadata-content elements like <style> as editable ? Open

editing

Difficulty 5/5 Over a week Newbie friendliness 35/100

web-platform-tests/wpt#59509 · 2 comments · Opened Apr 28, 2026
macOS CI failures: test_list_tests_missing_manifest Open

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

web-platform-tests/wpt#59494 · 2 comments · Opened Apr 27, 2026
wpt lint should be able to check the git index or a specific git commit Open

infra lint priority:backlog

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

web-platform-tests/wpt#59364 · Opened Apr 20, 2026
Add TestUtils.blocking_gc() to support synchronous Test262 tests Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

web-platform-tests/wpt#59239 · Opened Apr 15, 2026

web-platform-tests/wpt

Get new issues in your inbox