Katana
Katana is a fast, configurable web crawler from ProjectDiscovery.
Legal & ethical use. Use this tool only on systems, networks and data that you own or have explicit written permission to test. Unauthorised access or scanning can break computer-misuse laws (for example Pakistan's Prevention of Electronic Crimes Act, 2016, and equivalents elsewhere). Practise in your own lab or in authorised environments such as CTFs.
What it is used for
- Map the endpoints of your own application
- Create URL lists for scanners
Key features
- Standard and headless crawling
- Scope control
- JS endpoint parsing
Installation
go install github.com/projectdiscovery/katana/cmd/katana@latest
Beginner usage guide
Crawl a local practice site with a low depth.
Example commands
Run these only against your own lab or authorised targets. Placeholder addresses such as 192.0.2.x are documentation ranges.
Crawl a site
katana -u http://localhost:3000 -d 2-u is the start URL; -d limits crawl depth.
References
Source verification
Last reviewed: 2026-10-27
Links checked over HTTP: 2026-10-27 07:51 UTC — official: 200, docs: 200, repo: 200
Commands were written from the official documentation and have not been executed on this site; test them in your lab.