html5lib/html5lib-python
Standards-compliant library for parsing and serializing HTML documents and fragments in Python observed · 2026-08-28
Health v2 · maintenance only
67/100
- Activity 78
- Release rhythm 35
- Longevity 100
Flags: no_releases
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: 4894
- days_rel: n/a
- days_push: 134
- n_releases_24m: 0
Adoption not part of the score
1223 stars · 308 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
html5lib is a pure-Python library for parsing and serializing HTML documents and fragments according to the WHATWG HTML specification, matching browser behavior. It supports multiple tree formats including ElementTree, minidom, and lxml.
Use cases
- parse html documents in python
- parse malformed html like a browser would
- extract data from html pages
- serialize html fragments
- convert html to lxml or minidom trees
- strict html validation with parse errors
When to choose
- you need browser-identical HTML5 parsing behavior
- you must handle broken or real-world HTML robustly
- you need a pure-Python parser with no C dependencies
When to avoid
- you only need fast parsing of well-formed HTML (lxml is faster)
- you need to parse XML rather than HTML
- you need active feature development rather than maintenance
Facets
library · maturity maintenance
parser serialization web-development parsers developer-tools python html-parsing whatwg-html5 pure-python web-scraping-support
1 source
- readme: https://github.com/html5lib/html5lib-python · fetched 2026-08-28 · 88f014628c7b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| html5lib/html5lib-python | main | 67 |
For agents
markdown · JSON · MCP: product_card(name="html5lib/html5lib-python")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem