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Website security scanners compared

Side by side pages for the free scanners people ask about. Every claim about another tool comes from its own site, and each page says where that tool does more than PwnMyVibeCode.

• The best free website security scanners, comparedTen free website security scanners compared: what each checks, what the free tier covers and which fits your site, from each tool's own pages.
• Sucuri SiteCheck alternative for apps built with AISucuri SiteCheck looks for malware and blocklisting. PwnMyVibeCode looks for leaked keys, public .env files and missing headers. See which fits your app.
• Mozilla Observatory alternative with fixes for your hostMDN HTTP Observatory gives a detailed header score. PwnMyVibeCode grades headers and cookies and gives a fix for your host and AI agent. Where each wins.
• SecurityHeaders.com alternative with fixes for your hostSecurityHeaders.com grades your response headers A+ to F. PwnMyVibeCode grades headers and cookies and gives a fix for your host and AI agent. Compare.

The PwnMyVibeCode quick check runs from the home page, and the full check runs on a site you own.