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SecurityHeaders.com alternative with fixes for your host
SecurityHeaders.com is a free, single purpose tool from Snyk that grades your HTTP response headers from A+ to F. It lists a wider range of headers than PwnMyVibeCode grades. PwnMyVibeCode grades the core headers plus your HTTPS redirect and cookies, links every finding to a fix for your host and your AI agent, and adds a full check for leaked keys and public files on your own site.
Checked against each tool's own pages on .
| SecurityHeaders.com | PwnMyVibeCode | |
|---|---|---|
| Price | Free | Free |
| Grade | A+ to F, plus R for a redirect | A to F |
| Headers | A wide range, shown as present or missing | HSTS, CSP, frame protection, nosniff and Referrer Policy |
| Server and X-Powered-By | Shown as extra information | Flagged as version disclosure in the full check |
| Cookies and HTTPS redirect | Not mentioned on its site | Yes |
| Keys in your JavaScript, public files | Not mentioned on its site | Full check on your own site |
| Recent scans | Public list, with a Hide results option | Not listed; your share link works for 30 days |
| API | Discontinued, per its API page | No, web only |
Where SecurityHeaders.com is better
- It lists more headers as present or missing, so you see more of what a response sends.
- It's a simple, single purpose tool, and its home page counts over 378 million scans.
- It shows informational headers such as Server and X-Powered-By next to the grade.
Where PwnMyVibeCode is better
- Each finding links to a fix page with the change to make and a prompt for your AI agent.
- Header guides for Next.js, Vercel, Netlify, Cloudflare, Express and nginx give you one block to paste, Permissions-Policy included.
- It also checks your HTTPS redirect and whether login cookies are Secure and HttpOnly.
- The full check adds leaked keys in your scripts, public .env and .git files, CORS and Supabase or Firebase config.
Which one should you use?
- You want a fast look at every header a response sends: SecurityHeaders.com.
- You want to know exactly what to change on your host, or you built with AI and want keys and files checked too: PwnMyVibeCode.
The PwnMyVibeCode quick check
Grades a site's HTTPS redirect, security headers and cookies from A to F. Free, no signup, GET and HEAD requests only.
Questions
Is SecurityHeaders.com free?
Yes. Its about page calls it a free and easy to use tool. Its API page says the API service has been discontinued.
Who runs SecurityHeaders.com?
Snyk. Its about page says Security Headers is part of Snyk and was originally created by Scott Helme.
How do I get an A+ on SecurityHeaders.com?
Its FAQ says your site needs to send all the response headers it checks for. The header guides on this site give one block for your host that sets the common ones.
Does PwnMyVibeCode grade as many headers?
No. It grades HSTS, CSP, frame protection, nosniff and Referrer Policy, plus the HTTPS redirect and cookie flags. SecurityHeaders.com lists more headers as present or missing.