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whatwg

15 indexed repositories · View on GitHub

fetch
Fetch Standard

HTML · 2251 stars
dom
DOM Standard

HTML · 1732 stars
streams
Streams Standard

HTML · 1416 stars
url
URL Standard

HTML · 624 stars
webidl
Web IDL Standard

HTML · 502 stars
xhr
XMLHttpRequest Standard

HTML · 334 stars
infra
Infra Standard

HTML · 161 stars
mimesniff
MIME Sniffing Standard

HTML · 122 stars
fullscreen
Fullscreen API Standard

HTML · 109 stars
whatwg.org
The WHATWG website and other static resources

HTML · 85 stars
sg
A place to raise issues with the WHATWG Steering Group

Python · 82 stars
wattsi
Preprocessor for the HTML Standard

Pascal · 71 stars
participant-data
How we track participants in the WHATWG

42 stars
quirks
Quirks Mode Standard

HTML · 38 stars
misc-server
Miscellaneous resources for the servers hosting *.whatwg.org domains

Python · 27 stars

Beginner friendly Everything

Open All

COEP credentials/taint Open

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

whatwg/fetch#1958 · Opened Sep 19, 2026
Is it intentional that the "check the usability of the image argument" steps don't fail for natural width/height that don't exist? Open

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

whatwg/html#12964 · Opened Sep 19, 2026
In `appearance: base` <select>, use the label attribute as a fallback rather than a rendering override Open

addition/proposal needs implementer interest

Difficulty 4/5 3-5 days Newbie friendliness 50/100

whatwg/html#12963 · Opened Sep 19, 2026
Invoking a callback interface on a cross-origin Location or WindowProxy enters the other origin's realm Open

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

whatwg/webidl#1640 · Opened Sep 19, 2026
Session history: a changing navigable continuation activates a target entry that a queue-jumping synchronous navigation has replaced or removed Open

compat topic: navigation

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

whatwg/html#12961 · Opened Sep 19, 2026
`text/html;` example conflicts with RFC 9110 Open

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

whatwg/mimesniff#215 · Opened Sep 18, 2026
Upcoming WHATNOT meeting on 2026-09-24 Open

agenda+

Difficulty 1/5 Under an hour Newbie friendliness 20/100

whatwg/html#12958 · Opened Sep 17, 2026
Meeting 51 for joint OpenUI-WHATWG/HTML-CSSWG task force on styleable form controls Open

task-force-agenda

Difficulty 1/5 Under an hour Newbie friendliness 20/100

whatwg/html#12956 · 1 comment · Opened Sep 17, 2026
Using attr() for select list box appearance makes rendering mismatch semantics Open

topic: rendering topic: select

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

whatwg/html#12952 · 1 reaction · Opened Sep 16, 2026
Reconsider validity of `<style>` inside `<body>` Open

document conformance

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

whatwg/html#12951 · 4 comments · 6 reactions · Opened Sep 16, 2026
Proposed `CanvasRenderingContext2D.fillTextCluster()` takes the same x and y for all clusters Open

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

whatwg/html#12950 · Opened Sep 15, 2026
Extending `TextMetrics` for text editing/shaping is not suitable for rich text editing Open

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

whatwg/html#12949 · Opened Sep 15, 2026
Proposed `TextMetrics.getTextClusters()` is inefficient for uniform styling Open

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

whatwg/html#12948 · Opened Sep 15, 2026
Extending `TextMetrics` for text editing/shaping is not extensible for multi-styled text Open

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

whatwg/html#12946 · Opened Sep 15, 2026
Should a <select> with a first-child <button> be able to be labeled by a parent <label>? Open

document conformance topic: select

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

whatwg/html#12943 · 1 comment · Opened Sep 14, 2026
The rules for choosing a navigable "_parent" lets a cross-origin child navigate a parent != top, but implementations block it Open

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

whatwg/html#12941 · Opened Sep 14, 2026
Should <select>'s first child <button> be able to submit or reset the form? Open

document conformance topic: select

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

whatwg/html#12937 · 1 comment · Opened Sep 14, 2026
Synchronous navigation can leave the current entry index at −1 Open

topic: navigation topic: navigation API

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

whatwg/html#12934 · Opened Sep 12, 2026
Upcoming WHATNOT meeting on 2026-09-17 Open

agenda+

Difficulty 1/5 Under an hour Newbie friendliness 15/100

whatwg/html#12923 · 3 comments · Opened Sep 10, 2026
Why do Readers and Writers have constructors? Open

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

whatwg/streams#1381 · Opened Sep 10, 2026
Policy container stored in history for srcdoc iframes Open

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

whatwg/html#12920 · Opened Sep 9, 2026
BFCache: `load` event not fired when restoring document from BFCache Open

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

whatwg/html#12918 · 3 comments · Opened Sep 9, 2026
Support <slot>-s in processing instructions + <template for> Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/html#12913 · Opened Sep 7, 2026
Is "the value of the last Content-Type header" correct? Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

whatwg/mimesniff#214 · 1 comment · Opened Sep 7, 2026
Distinguish drawing priority from no preference in Canvas 2D Open

addition/proposal needs implementer interest topic: canvas

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

whatwg/html#12907 · Opened Sep 5, 2026
"default object size" for <video> is not hooking into CSS correctly Open

topic: media topic: rendering

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

whatwg/html#12903 · 3 comments · Opened Sep 3, 2026
Investigate a native primitive for continuously moving content Open

addition/proposal needs implementer interest

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

whatwg/html#12902 · Opened Sep 3, 2026
A response no longer has a timing info Open

topic: timing

whatwg/html#12887 · 1 assignee · Opened Sep 2, 2026
Make preventDefault reserve undo history saving option Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/dom#1501 · 1 comment · Opened Sep 1, 2026
Focus navigation is broken if trigger is a descendant of popover Open

topic: focus topic: popover

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

whatwg/html#12873 · Opened Aug 31, 2026
Should child navigables be populated from history and identified across navigations where their creator reloads / traverses? Open

topic: frames/navigables/browsing contexts topic: history

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

whatwg/html#12872 · 3 comments · Opened Aug 31, 2026
Relationship between popover and children/shadow root in focus navigation is unclear Open

topic: focus topic: popover

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

whatwg/html#12871 · 3 comments · Opened Aug 31, 2026
Same-document finalization history step aborts later cross document navigation Open

topic: navigation

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

whatwg/html#12861 · 3 comments · Opened Aug 29, 2026
History traversal dereferences a null target document after a 204/205 response Open

topic: navigation

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

whatwg/html#12858 · Opened Aug 28, 2026
Proposal: New native <rating> element for semantic reviews and interactive scores Open

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

whatwg/html#12857 · Opened Aug 27, 2026
Proposal: New declarative <currency> element for semantic web and native internationalization Open

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

whatwg/html#12856 · 1 comment · Opened Aug 27, 2026
Optimize MDN panels Open

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

whatwg/wattsi#169 · 7 comments · Opened Aug 27, 2026
select validity Open

topic: select

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

whatwg/html#12855 · 4 comments · Opened Aug 27, 2026
Resource selection algorithm reads the loading attribute before the parser has appended it Open

topic: media

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

whatwg/html#12854 · Opened Aug 27, 2026
Add `crossOriginStorage` option on `RequestInit` Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1954 · Opened Aug 26, 2026
Alternative to `blur` and `focusout` on removal Open

topic: focus

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

whatwg/html#12842 · 12 comments · Opened Aug 25, 2026
Order of the error event and the pointer advance is not defined in resource selection Open

topic: media

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

whatwg/html#12836 · Opened Aug 24, 2026
Resource selection: no engine runs the synchronous section at a microtask checkpoint Open

topic: media

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

whatwg/html#12835 · 3 comments · Opened Aug 24, 2026
Navigation API: make the "signals to the user … via … assistive technology … that the navigation is finished" behavior for intercepted navigations normative Open

topic: navigation API

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

whatwg/html#12834 · Opened Aug 24, 2026
Adoption agency algorithm can throw after a custom element reaction reparents nodes Open

topic: custom elements topic: parser

Difficulty 4/5 3-5 days Newbie friendliness 50/100

whatwg/html#12828 · 1 comment · Opened Aug 24, 2026
Web Storage and IndexedDB should use transactional isolation during prerendering, matching the cookie model Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/html#12826 · Opened Aug 23, 2026
Allow specifying favicon location on non-HTML resources Open

addition/proposal needs implementer interest topic: link

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

whatwg/html#12825 · 1 comment · Opened Aug 23, 2026
Navigation API: Option to treat `sameDocument` traverse as a regular navigation when no `intercept()` is registered Open

topic: navigation topic: navigation API

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/html#12822 · Opened Aug 21, 2026
Navigation API: Expose why a navigation was aborted (abort reason / `navigateerror`) Open

addition/proposal needs implementer interest topic: navigation topic: navigation API

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

whatwg/html#12821 · Opened Aug 21, 2026
Navigation API: Allow detection of non-intercepted ongoing navigations Open

addition/proposal needs implementer interest topic: navigation topic: navigation API

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

whatwg/html#12820 · Opened Aug 21, 2026

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