Remove line breaks
Collapse multi-line text into a single continuous line.
What to know
Line breaks are replaced with single spaces and surrounding whitespace is collapsed, which is what you want when pasting text out of a PDF or an email where every line has been hard-wrapped.
Questions
Is anything uploaded to a server?
No. Every tool on this site runs inside your browser using standard web APIs. There is no upload, no account, no logging and no server holding your data afterwards. You can confirm it by opening your browser's developer tools and watching the network tab stay empty while you work.