WebPlatformTest/HTML5test
How well does your browser support HTML5? observed · 2026-09-03
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5988
- days_rel: n/a
- days_push: 845
- n_releases_24m: 0
Adoption not part of the score
1005 stars · 211 forks observed · 2026-09-03
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
HTML5test is a web application that scores how well a browser supports HTML5 and related web specifications, letting users compare results across browsers. The project is officially retired and kept online only as a static snapshot, with no updates since 2016.
Use cases
- check how well my browser supports html5
- compare html5 support between browsers
- test which html5 features my browser supports
- score a browser's web standards compliance
- find out if a browser supports specific html5 apis
When to choose
- you need a historical snapshot of browser HTML5 support for research or comparison
- you want a quick, simple feature-detection score for an older browser
When to avoid
- you need up-to-date web standards testing - the test has not been updated since 2016
- you need modern feature detection in your own code - use a library like Modernizr instead
- you need exhaustive or functional testing of features - the test only detects presence, not behavior
Facets
application · maturity abandoned
testing e2e-testing developer-tools web-development browser-extensions developer-tools testing browser html5 browser-compatibility web-standards feature-detection benchmark web-server javascript
3 sources
- readme: https://github.com/WebPlatformTest/HTML5test · fetched 2026-09-03 · 27e8ff525967
- homepage: https://html5test.com · fetched 2026-08-29 · 7a2e1bcddb05
- site_page: https://html5test.com/about.html · fetched 2026-08-29 · fc5e15bfb8ec
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| WebPlatformTest/HTML5test | main | 10 |
For agents
markdown · JSON · MCP: product_card(name="WebPlatformTest/HTML5test")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem