Whitespace & Invisible Character Cleaner tidies the parts of text you cannot see: trailing spaces, zero-width characters, bidi controls, non-breaking spaces, odd tab usage, and curly punctuation.
It scans first and shows what it found, then applies only the fixes you tick. Nothing is uploaded.
Zero-width space, zero-width joiner and non-joiner, the byte-order mark, soft hyphen, left-to-right and right-to-left marks, and the bidi embedding and override controls.
Only the options you tick run. Straighten curly quotes, for example, is off by default because some writing needs them.
The scan reports CRLF endings. Converting them is handled by the Line Break Tools.
No. The clean-up runs in your browser.