# whatwg/html

HTML Standard

Repository: https://github.com/whatwg/html
Canonical: https://ross.abutalabs.com/products/html
Homepage: https://html.spec.whatwg.org/multipage/
Language: HTML
License: NOASSERTION
License Family: other
Topics: whatwg, html, standard, canvas, storage, eventsource, workers, html-standard
Last push: 2026-08-26T19:48:42+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 4773, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 9371, forks 3193 (observed 2026-08-28T04:10:30.883157+00:00)

## What it is
The WHATWG HTML Living Standard, the authoritative specification defining HTML, its syntax, DOM APIs, and related web platform features such as workers, storage, and server-sent events. This repository hosts the spec source and build tooling for the standard published at html.spec.whatwg.org.

## Use cases
- look up how an html element or attribute is supposed to behave
- implement an html parser or browser engine
- check the spec for eventsource or web workers apis
- verify html conformance rules for a validator
- understand html syntax and parsing algorithm details
- contribute to or track changes in the html standard

## When to choose
- you need the normative, authoritative definition of HTML behavior
- you are building a browser, parser, or conformance checker
- you want to cite the canonical spec for a web platform feature

## When to avoid
- you want a beginner tutorial on writing HTML - use MDN instead
- you need a runnable library or tool rather than a specification document

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, parser, web-framework
- domain: web-development, frontend, documentation, apis
- platform: browser, cross-platform
- tags: html-standard, specification, whatwg, living-standard, web-platform, standards, reference, web-server

## Member repositories
- whatwg/html (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:30.883157+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:22:21.826948+00:00, confidence not recorded.
  - readme: https://github.com/whatwg/html (fetched 2026-08-28T04:10:30.883157+00:00, sha a36af09bcf4e)
  - homepage: https://html.spec.whatwg.org/multipage/ (fetched 2026-08-29T08:22:26.678898+00:00, sha 070786ab6d49)
  - site_page: https://html.spec.whatwg.org/multipage/infrastructure.html (fetched 2026-08-29T08:22:26.682723+00:00, sha e0d9a4ba89cd)
  - site_page: https://html.spec.whatwg.org/multipage/scripting.html (fetched 2026-08-29T08:22:26.688538+00:00, sha 814e24b544a8)
  - site_page: https://html.spec.whatwg.org/multipage/server-sent-events.html (fetched 2026-08-29T08:22:26.695506+00:00, sha adfe1645ba73)
  - site_page: https://html.spec.whatwg.org/multipage/obsolete.html (fetched 2026-08-29T08:22:26.699719+00:00, sha 0e6c3959212a)
- Data as of 2026-08-30T08:39:29.467469+00:00.