Tools ranked by security headers

Tools ranked by the security headers their websites send. Checked automatically, re-checked every week, never paid for.

The letter grades the security headers a tool’s website sends, out of 100.

The bar under each tool is the nine checks, sized by weight: filled when the header is there, empty when it is missing. Missing headers open the door to man-in-the-middle attacks, malicious JavaScript, redirected forms and hijacked payments. How each one works, and how buyers put this in an RFP.

  1. Grade A+, 100 out of 100.

    Cloudflare cloudflare.com

    CDN, DNS and DDoS protection in front of any website, with a free plan, plus Workers for running code at the edge.

    cdn-security · 9 of 9 headers · checked 2026-10-09

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