Free security tool

HTTP Security Header Analyzer

Paste raw HTTP response headers. Get a security grade, missing-header warnings, and remediation guidance. Client-side only.

Tool

Run curl -I https://example.com and paste the headers below.

More free security tools

JWT Decoder →Hash Generator →Password Checker →
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.

CRYPTO
Modern Cryptography Fundamentals
Pair with the Hash Generator + Password Strength tools.
JWT ATTACKS
JWT Attacks
Pair with the JWT Decoder above.
TLS
TLS in Practice
Pair with the HTTP Header Analyzer tool.
WEB BASICS
HTTP & Web Fundamentals
The foundation for web pentest work.
Skill Map Browse all modules →