Base64 Image / Data URI Builder
Wrap Base64 content into a data: URI with a chosen MIME type, or extract the MIME and decoded payload from an existing data URI.
Related
A1Z26 Letter-Number Cipher
Convert letters to their alphabet position numbers (A=1…Z=26) and back.
Encoding
Affine Cipher
Encrypt/decrypt with the affine cipher E(x)=(a·x+b) mod 26, including key validity checks.
Encoding
ASCII / Code Point Converter
Convert text to ASCII/Unicode code point numbers and convert numeric lists back to text.
Encoding
ASCII ↔ EBCDIC Converter
Convert text between ASCII/Latin-1 and IBM EBCDIC code pages, byte for byte.
Encoding