#text-transform

Alternate lowercase and uppercase letters through your text while preserving spacing and punctuation.

Decode or encode ROT13 text in one step, or switch to ROT5 for digits, ROT18 for letters and digits, or ROT47 for all printable ASCII.

Flip text upside down by rotating each letter 180 degrees with Unicode lookalike glyphs. Characters with no upside down form stay as they are.

Convert text to snake_case, so words become lowercase and spaces become underscores.