Tools
Small utilities I kept needing. Every one of them runs in your browser, so nothing you paste or upload ever leaves this tab.
Nothing is uploaded. Every tool on this site does its work in your browser. There is no backend to send your files or text to, which you can check for yourself in the network tab.
Incident response 2 tools
Email Header Analyzer Paste raw email headers. Reconstructs the delivery path with per-hop timing and flags spoofing indicators: display-name tricks, Reply-To redirects, envelope mismatches, punycode senders. Sigma Rule Tester Evaluate a Sigma rule against sample events and see which search identifiers matched. Rules using features it cannot evaluate are refused by name rather than silently returning no match. betaCrypto & encoding 3 tools
Hashes MD5, SHA-1, SHA-256, SHA-512, SHA-3-256 for text or files. Includes size + Shannon entropy. Encode / Decode Base64 (std + URL-safe), URL, HTML, Hex, Binary, JSON-escape. Live, bidirectional. JWT Inspector Decode JWTs locally. Header, payload, and signature with annotated claims. Web & network 2 tools
HTTP Header Audit Paste response headers. Get a graded report on HSTS, CSP, frame options, referrer-policy, COOP/COEP and more. Regex Tester Live matching with highlighting and capture groups. Per-line mode for checking a pattern against log output, a capture table you can copy as TSV, and a warning for shapes that backtrack catastrophically.