Security Headers Checker
Free tool that grades a public page's HTTP security headers
SecurityFree#security-headers#web-security
Launches Dec 11, 2026 at 00:00 UTC
What is Security Headers Checker?
The Penetration Test Services security headers checker grades the HTTP response headers of one public URL. It is free and needs no account. It fetches the page once per redirect, like a browser visit, and changes nothing. A JSON endpoint is also free: GET /api/check-headers?url=..., limited to 12 requests per minute per IP. Published by Excession Labs.
Security Headers Checker features
- Grades the HTTP response headers of one public URL
- Needs no account and changes nothing on the checked page
- Free JSON endpoint: GET /api/check-headers?url=...
Who uses Security Headers Checker and for what
- Grade the response headers of a public page in the browser, no sign-up
- Call the JSON endpoint from a script, up to 12 requests per minute per IP
Security Headers Checker FAQ
Is the checker free?
Yes. It is free and needs no account.
Does it change the page it checks?
No. It fetches the page once per redirect, like a browser visit, and changes nothing.
Is there a JSON endpoint?
Yes. GET /api/check-headers?url=... is free, limited to 12 requests per minute per IP.
Comments (0)
No comments yet. Ask the maker a question or share how you would use it.
More Security launches
Find out who's calling: worldwide spam call database
Antidetect browser for multi-account management
Manages visitor check-ins and security for workplaces
HOL GuardOpen source · verified
Approve or block AI coding agent actions on your machine
Share encrypted text and clean files before sending
Fraud, AML & cybersecurity compliance for Saudi Arabia
