Does it change line breaks?

No, line breaks are preserved unless you remove blank lines.

Yes, runs of tabs and spaces are collapsed to a single space.

Will it break code indentation?

Yes, use it on prose — not source code.

Collapse multiple spaces, trim lines and optionally drop blank lines.

Remove blank lines

Normalises whitespace by collapsing runs of spaces and trimming line ends.

Strip duplicate lines from a list, optionally case sensitive.

Sort lines alphabetically A→Z or Z→A.

Convert text to UPPERCASE, lowercase, Title Case, camelCase and more.