# lexbor/lexbor

Lexbor is development of an open source HTML Renderer library. https://lexbor.com

Repository: https://github.com/lexbor/lexbor
Canonical: https://ross.abutalabs.com/products/lexbor
Language: C
License: Apache-2.0
License Family: permissive
Topics: c, html, fast
Last push: 2026-08-15T08:01:26+00:00

## Health v2 (maintenance only)
Score: 82/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 53, longevity 100
- inputs: {"age_days": 3115, "days_push": 18, "days_rel": 155, "gap_med": 105.5, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2055, forks 146 (observed 2026-08-28T04:06:09.820457+00:00)

## What it is
Lexbor is a fast, standards-compliant HTML parser and DOM library written in pure C99, with additional modules for CSS, URL, encoding, and Unicode handling. It serves as the foundation for an in-development browser engine and is used in production by PHP, SerpApi, and popular scraping libraries.

## Use cases
- parse html in c
- fast html scraping backend
- manipulate dom tree programmatically
- parse css selectors
- handle url parsing and encoding
- embed html parser in another language runtime

## When to choose
- you need one of the fastest HTML parsers with zero dependencies
- you require strict WHATWG HTML5/DOM spec conformance
- you want a lightweight C library to embed or bind to other languages

## When to avoid
- you need full browser rendering, layout, or fonts (still in progress)
- you prefer a high-level garbage-collected language API without bindings
- you need JavaScript execution

## Facets
- artifact type: library
- maturity: active
- function: parser, web-scraping, serialization
- domain: parsers, web-development, developer-tools
- platform: c, cpp, cross-platform, cli
- tags: html-parser, css-parser, dom, whatwg, browser-engine, zero-dependencies, c99, url-parsing, encoding

## Member repositories
- lexbor/lexbor (main) score 82

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:09.820457+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 2026-08-30T02:57:16.175193+00:00, confidence not recorded.
  - readme: https://github.com/lexbor/lexbor (fetched 2026-08-28T04:06:09.820457+00:00, sha fc4b8fd23163)
- Data as of 2026-08-30T08:39:29.467469+00:00.