Security tools
JWT, CIDR, hashes, passphrases, leaked-secret scan, and a header check. Certificate generation and SSL inspection are on SelfSignedCert.
JWT inspector
Decode a token, read claims, and see expiry. Signature is not verified.
CIDR calculator
Network, mask, broadcast, usable hosts. IPv4. For firewall and VPC math.
Hash lab
SHA-256, SHA-384, SHA-512, and SHA-1 in this tab. Nothing is sent.
Passphrase generator
Random passwords or word-based phrases from the browser CSPRNG.
Secret scanner
Paste logs or a .env dump. Flags keys, tokens, PEMs, and JWTs locally.
Header check
Fetch a public URL and score HSTS, CSP, frame options, and MIME sniffing.
SelfSignedCert tools
Live SSL checker, PEM decoder, CSR decoder, chain validator, PFX convert, CT lookup.