Identity
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Password strength checker
See how long a password would survive offline cracking, and why.
Password generator
Cryptographically random passwords and memorable passphrases.
JWT decoder
Decode a JSON Web Token and flag risky settings. Decoding is not verifying.
Crypto
Analysis
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Base64 encoder/decoder
Base64, Base64URL, URL, Hex, HTML entities and ROT13, both ways.
Email header analyzer
Paste raw headers to check SPF, DKIM, DMARC, the relay path and spoofing signs.
Phishing URL checker
Checks a link for phishing red flags without visiting it.
Vulnerability
Network
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Subnet calculator
Network, broadcast, host range and mask for any IPv4 CIDR.
Port reference
Search common ports with the security note for each.