Construct and validate HTTP CSP headers and meta tags.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Select allowed origins for default-src, script-src, style-src, img-src, connect-src, and frame-ancestors.
Enable upgrade-insecure-requests, block-all-mixed-content, and report-uri endpoints.
Copy the formatted Content-Security-Policy HTTP header or HTML <meta> tag.
CSP prevents Cross-Site Scripting (XSS), clickjacking, and unauthorized data injection attacks by restricting resource load origins.
Yes, custom script hashes and strict-dynamic configurations are supported.
Zero-egress companion tools in the Security & Network suite
Measure cryptographic randomness, Shannon entropy (0-8 bits/byte), Chi-square test, and byte distributions.
Brute-force all 256 single-byte XOR keys with automated English frequency & chi-squared scoring.
Audit CSP, HSTS, X-Frame-Options, and security headers with OWASP grading (A+ to F).
Compare memory hardness, GPU ASIC resistance, and security parameters across KDF standards.
