# linkchecker/linkchecker

check links in web documents or full websites

Repository: https://github.com/linkchecker/linkchecker
Canonical: https://ross.abutalabs.com/products/linkchecker-linkchecker
Homepage: https://linkchecker.github.io/linkchecker/
Language: Python
License: GPL-2.0
License Family: copyleft
Topics: www, http, link-checker, web, tools
Last push: 2026-07-28T04:13:06+00:00

## Health v2 (maintenance only)
Score: 65/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 8, longevity 100
- inputs: {"age_days": 3501, "days_push": 36, "days_rel": 401, "gap_med": 328, "n_releases_24m": 2}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1075, forks 169 (observed 2026-08-28T04:03:29.226043+00:00)

## What it is
LinkChecker is a GPL-licensed Python tool that checks links in web documents or entire websites for broken URLs. It supports recursive multithreaded crawling, multiple output formats, and both a command-line and web interface.

## Use cases
- find broken links on my website
- crawl a site and validate all URLs
- check a local HTML file for dead links
- generate a report of broken links in CSV or HTML
- recursively check external links before a site migration
- monitor a documentation site for dead anchors

## When to choose
- you need a mature, scriptable command-line link checker
- you want recursive crawling with regex URL filters and robots.txt support
- you need output in text, HTML, SQL, CSV, XML, or sitemap graph formats
- you want to run checks in Docker without installing dependencies

## When to avoid
- you need a GUI-based link checker
- you need JavaScript-rendered page validation (it does not execute JS)
- you want continuous uptime monitoring rather than on-demand checks

## Facets
- artifact type: cli-tool
- maturity: active
- function: web-scraping, cli, developer-tools
- domain: web-development, developer-tools
- platform: python, cli, cross-platform
- tags: link-checker, broken-links, site-crawler, url-validation, website-validator, command-line, automation, docker

## Member repositories
- linkchecker/linkchecker (main) score 65

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:29.226043+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 2026-08-30T06:53:26.989092+00:00, confidence not recorded.
  - readme: https://github.com/linkchecker/linkchecker (fetched 2026-08-28T04:03:29.226043+00:00, sha 3549ead9684b)
  - homepage: https://linkchecker.github.io/linkchecker/ (fetched 2026-08-29T12:55:19.420699+00:00, sha 2017a96ddf82)
  - registry_pypi: https://pypi.org/pypi/linkchecker/json (fetched 2026-08-29T12:55:19.423321+00:00, sha 9c0265ecb5bb)
- Data as of 2026-08-30T08:39:29.467469+00:00.