Security UtilitiesFile Hash / ChecksumCalculate SHA-1, SHA-256, SHA-384, or SHA-512 checksums for a local file with Web Crypto.On-device
Security UtilitiesPassword Strength CheckerCheck password length, character variety, obvious patterns, and a local heuristic entropy estimate without upload.On-device
Security UtilitiesRandom Token / Secret GeneratorGenerate random byte tokens as hexadecimal or base64url with Web Crypto.On-device
Security UtilitiesHMAC GeneratorGenerate HMAC-SHA-256, SHA-384, or SHA-512 locally from a message and secret.On-device
Security UtilitiesRandom String GeneratorGenerate cryptographically random strings from preset or custom alphabets.On-device
Security UtilitiesSecure Random Number GeneratorGenerate unbiased random integers in a selected range using Web Crypto rejection sampling.On-device
Security UtilitiesUUID v4 / v7 GeneratorGenerate UUID v4 random identifiers or UUID v7 time-ordered identifiers locally.On-device