How it works
Paste your text, choose the options and run. Review the result before copying.
Upper/lower uses locale casing; ß can become SS. Word-initial capitals are mechanical, not editorial title case.
Example
A quiet morning. Été Straße Σίσυφος
Limits
Up to 1 MiB total UTF-8 input. Line operations normalize CRLF/CR to LF. Processing stops after 5 seconds.