8 browser tools
Test it yourself, locally
Small tools for everyday security work. They run entirely in your browser: passwords, files, headers, links and tokens you enter are never transmitted.
- Password LabTest how strong a password is and generate a better one. Nothing leaves your browser./tools/password-lab/
- Checksum VerifierHash a file or text with SHA-256 and compare it with the published checksum./tools/checksum-verifier/
- Header CheckPaste the response headers of your site and get a graded report./tools/security-header-check/
- URL InspectorTake a link apart and see the warning signs of phishing./tools/url-inspector/
- CSP BuilderBuild a Content Security Policy step by step, ready for Apache or Nginx./tools/csp-builder/
- SSH Config BuilderChoose your options and get a hardened sshd_config drop-in./tools/ssh-config-builder/
- JWT DecoderDecode a JSON Web Token locally and spot risky claims./tools/jwt-decoder/
- Security Self-CheckTwelve questions, a score and a prioritised to-do list./tools/security-self-check/
- Comparisons13 interactive comparisons you can weight yourself./compare/
- Glossary202 security terms in plain English./glossary/