tldr/pages/common/katana.md

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# katana
> A fast crawler focused on execution in automation pipelines offering both headless and non-headless crawling.
> See also: `gau`, `scrapy`, `waymore`.
> More information: <https://github.com/projectdiscovery/katana>.
- Crawl a list of URLs:
`katana -list {{https://example.com,https://google.com,...}}`
- Crawl a [u]RL using headless mode using Chromium:
`katana -u {{https://example.com}} -headless`
- Use `subfinder` to find subdomains, and then use [p]a[s]sive sources (Wayback Machine, Common Crawl, and AlienVault) for URL discovery:
`subfinder -list {{path/to/domains.txt}} | katana -passive`
- Pass requests through a proxy (http/socks5) and use custom [H]eaders from a file:
`katana -proxy {{http://127.0.0.1:8080}} -headers {{path/to/headers.txt}} -u {{https://example.com}}`
- Specify the crawling [s]trategy, [d]epth of subdirectories to crawl, and rate limiting (requests per second):
`katana -strategy {{depth-first|breadth-first}} -depth {{value}} -rate-limit {{value}} -u {{https://example.com}}`
- Find subdomains using `subfinder`, crawl each for a maximum number of seconds, and write results to an [o]utput file:
`subfinder -list {{path/to/domains.txt}} | katana -crawl-duration {{value}} -output {{path/to/output.txt}}`