モールス Code

Generate cryptographically secure passwords with custom length and charset

Compute MD5 hash online, supports 32-bit upper/lower and 16-bit formats

Check password strength, entropy, crack time with improvement tips (local)

Compute SHA-1/256/384/512 and CRC32 hash values online

Online AES/DES/TripleDES/RC4/Rabbit encryption and decryption

Generate random integers in range with dedup, sort, and batch options

Validate, pretty-print or minify JSON with error line:col reporting

Merge multiple PDF files in sequence, all processed locally in browser