Encoders & decoders

Encode or decode Base64 and Base64URL text with UTF-8 support, fast copy actions, and local-safe processing for JWT and API testing.

Percent-encode and decode URL strings safely.

Decode JWT header/payload segments, inspect exp/nbf/iat claims as readable times, and review signature data locally before verification.

Encode and decode HTML entities like & and '.

Encode text to hexadecimal bytes and decode HEX back to text.

Convert text to binary and binary bytes back to readable text.

Encode plain text to Morse code and decode Morse back to text.

Encode and decode Base32 (RFC 4648) text with UTF-8 support and optional padding — the encoding behind TOTP secrets and DNS-safe identifiers.

Encode and decode Base58 using the Bitcoin and IPFS alphabet — compact, copy-paste-safe text with no look-alike characters.

Scramble and unscramble text with the self-inverse ROT13 and ROT47 rotation ciphers — perfect for hiding spoilers and puzzle answers, all in your browser.

Compute the IEEE CRC32 checksum of text as hex and decimal — the fast error-detection code used by zip, gzip, and PNG files, all in your browser.