Free security tools
Free Security Tools
Practical utilities for cybersecurity practitioners. All tools run entirely in your browser — nothing is sent to any server. Safe for sensitive data.
4
Free tools
100%
In-browser
0
Server calls
Free
Always
Available security tools
01
JWT Decoder
Decode and inspect JSON Web Tokens. Header, payload, signature — verified client-side.
Open tool →02
Hash Generator
MD5, SHA-1, SHA-256, SHA-384, SHA-512. Web Crypto API.
Open tool →03
Password Strength Checker
Entropy, GPU crack time, common-password detection. Runs offline.
Open tool →04
HTTP Header Analyzer
Grade HTTP response headers against OWASP baseline.
Open tool →Go deeper
Tools are only half the skill — learn the rest
Understand when, why, and how — not just what the tool outputs. Practitioner-written modules across offensive, defensive, and cloud security.