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Security Header Scanner

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Overview

Analyze HTTP security headers of any website and get an instant security grade with detailed recommendations.

๐Ÿ›ก๏ธ Security Header Scanner โ€” Instant HTTP Header Analysis Worried your favorite sites (or your own) are missing critical security headers? One click is all it takes. โšก Security Header Scanner inspects the HTTP response headers of any website you visit and gives you an instant, easy-to-read security grade โ€” from ๐ŸŸข A+ down to ๐Ÿ”ด F โ€” along with clear, actionable fix recommendations. โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” โœจ KEY FEATURES โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐ŸŽฏ One-Click Scanning โ€” Open the popup on any tab and get results in seconds. ๐Ÿ† Letter Grade System โ€” A+, A, B, C, D, F. Know instantly where a site stands. ๐Ÿ“Š Beautiful Landscape UI โ€” Wide, modern card layout designed for clarity. ๐Ÿ” Detailed Header Inspection โ€” See the exact value returned by the server. ๐Ÿ’ก Smart Recommendations โ€” Copy-ready header values you can drop into your config. ๐Ÿ” 100% Local โ€” Headers are fetched directly from the site. No data leaves your browser. โšก Lightweight & Fast โ€” Manifest V3, minimal permissions, zero tracking. โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿงช HEADERS WE CHECK โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” โœ… Strict-Transport-Security (HSTS) โœ… Content-Security-Policy (CSP) โœ… X-Frame-Options โœ… X-Content-Type-Options โœ… Referrer-Policy โœ… Permissions-Policy Each missing or misconfigured header comes with a ready-to-use example so you can fix issues in seconds. ๐Ÿ› ๏ธ โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ‘ค WHO IT'S FOR โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ‘จโ€๐Ÿ’ป Web Developers โ€” Verify your deployments ship with proper security headers. ๐Ÿ”’ Security Researchers โ€” Quick recon during assessments and bug bounties. ๐Ÿง‘โ€๐Ÿซ Educators & Students โ€” Learn how real-world sites configure HTTP security. ๐Ÿข IT & DevOps Teams โ€” Audit production and staging environments on the fly. โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿ” PRIVACY FIRST โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿšซ No analytics ๐Ÿšซ No tracking ๐Ÿšซ No external servers โœ… All scanning happens inside your browser โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” ๐Ÿš€ GET STARTED โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ” 1๏ธโƒฃ Pin the extension to your toolbar 2๏ธโƒฃ Visit any website 3๏ธโƒฃ Click the ๐Ÿ›ก๏ธ icon โ€” instant grade & report! Make the web a safer place, one header at a time. ๐Ÿ’š

Details

  • Version
    1.0.0
  • Updated
    May 2, 2026
  • Size
    16.99KiB
  • Languages
    English (United States)
  • Developer
    Website
    Email
    Roomikat@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

Security Header Scanner has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Security Header Scanner handles the following:

User activity

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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