Grades your site's security posture from A+ to F. Checks CSP, HSTS, X-Frame-Options and more with one click.
Get an instant letter grade for any website's security headers. Scores from 0-100 mapped to grades so you know exactly where you stand.
FREEScans CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and more in one click.
FREEGreen for present, red for missing. See at a glance which security headers your site has and which ones need attention.
FREEClick the extension icon on any site to instantly scan. No configuration, no setup, no accounts required.
FREEThe extension badge displays the current site's grade right on the toolbar icon. Spot security issues without opening the popup.
FREEView every HTTP response header the server sends. Complete transparency into what the server is telling your browser.
PRODetailed breakdown of Cross-Origin Resource Sharing configuration. Understand allowed origins, methods, and credentials settings.
PROParse and visualize Content-Security-Policy directives. See script-src, style-src, img-src and every directive explained.
PROExport scan results as JSON or Markdown. Share with your team, attach to tickets, or archive for compliance audits.
PROOne click to copy the full scan result. Paste into Slack, email, or documentation instantly.
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