#text-transform

Transform text with the ROT13, ROT5, ROT18 or ROT47 substitution ciphers. It all runs inside your browser, so your text stays on the device.

Alternate lowercase and uppercase letters through your text while preserving spacing and punctuation. It all runs inside your browser, on your device.

Convert text to snake_case, so words become lowercase and spaces become underscores. It all runs inside your browser, so your text stays on the device.

Flip text 180 degrees using Unicode lookalike glyphs, preserving characters that have no upside down form. It all runs inside your own browser.