Security

10 free online Security tools — fast, private and browser-based. No signup, no limits.

Password Strength Checker — Analyze password strength with entropy, criteria checklist and improvement suggestions
ROT13 Cipher — Encode and decode text with the ROT13 substitution cipher instantly
Base32 Encoder / Decoder — Encode and decode text using RFC 4648 Base32 encoding
Hex Encoder / Decoder — Convert text to hexadecimal bytes and decode hex back to text
Caesar Cipher — Encode and decode text with the Caesar cipher using a custom shift value
Vigenère Cipher — Encode and decode text with the Vigenère polyalphabetic substitution cipher
Atbash Cipher — Encode and decode text with the Atbash mirror cipher (A↔Z, B↔Y)
XOR Cipher — Encode text using XOR cipher with a numeric key and view hex output
CRC32 Checksum Calculator — Calculate the CRC32 checksum of any text in hex, decimal and binary
NanoID Generator — Generate NanoIDs with custom alphabet, size and bulk output