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Dev.to
Dev.to
7/1/2026
I built a browser-only HTTP Cookie Inspector — parse Set-Cookie, security score, XSS/CSRF flags, 84 tests

I built a browser-only HTTP Cookie Inspector — parse Set-Cookie, security score, XSS/CSRF flags, 84 tests

Short summary

Built a free browser-only tool that parses HTTP Set-Cookie headers and scores cookie security (0–100 based on Secure, HttpOnly, SameSite flags). Instantly flags XSS/CSRF risks and provides preset templates for session, persistent, and secure cookie types. Includes 84 tests and runs entirely client-side.

  • Parses Set-Cookie headers with automated security scoring (0–100)
  • Flags XSS/CSRF risks based on missing Secure, HttpOnly, or SameSite attributes
  • Browser-only, free, with 84 passing tests and preset cookie templates

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