Free tool
Trim whitespace from every cell in a CSV.
Extra spaces cause silent join failures, missed deduplication, and ugly exports. CSVTidy trims every cell and collapses internal double-spaces in one click.
Everything runs in your browser. Nothing is uploaded.
Drop a CSV or Excel file here
Or choose a file — nothing leaves your browser.
After you drop a file, you'll see the Trim whitespace action highlighted for you.
Common questions
Does it remove empty rows?
The parser already skips fully empty rows on load.
Does it handle tabs and non-breaking spaces?
Yes — all whitespace runs including tabs and non-breaking spaces collapse to a single space, then ends are trimmed.
Is my file uploaded anywhere?
No. The file is parsed and processed entirely in your browser using JavaScript. It never leaves your device, and nothing is stored on our servers.