Put text into sentence case: everything lower case, with the first letter of each sentence capitalised. Good for fixing text pasted from a source that shouted.
hello world. this is utiloot! is it useful? yes.
Hello world. This is utiloot! Is it useful? Yes.
A full stop, question mark or exclamation mark. The next letter after one of those is capitalised.
No. This tool runs entirely in your browser — nothing you type or paste is uploaded, logged or stored anywhere.
There is no fixed limit. Very large documents depend on your device’s memory, but ordinary pages and files are handled instantly.