# katana > A fast crawler focused on execution in automation pipelines offering both headless and non-headless crawling. > See also: `gau`, `scrapy`, `waymore`. > More information: . - 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 [p]a[s]sive sources (Wayback Machine, Common Crawl, and AlienVault) for URL discovery: `cat {{example.com}} | 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}}` - Crawl a list of domains, each for a specific amount of seconds, and write results to an [o]utput file: `cat {{path/to/domains.txt}} | katana -crawl-duration {{value}} -output {{path/to/output.txt}}`