Free CSV Cleaner
Upload or paste a CSV, remove empty rows and columns, trim whitespace, and download a clean file — all in your browser.
Drop your file here
or click to browse · CSV up to 50MB
Frequently Asked Questions
What is a CSV file?
CSV (Comma-Separated Values) is a plain-text format for tabular data, where each line is a row and commas separate columns. It's the most common format for spreadsheets and data exports.
How does CSV cleaning work?
The tool parses your CSV, then applies the options you choose — removing fully empty rows, removing columns that are empty in every row, trimming leading/trailing whitespace, and collapsing repeated internal spaces.
Are my files uploaded to a server?
No. Parsing and cleaning happen entirely in your browser using JavaScript. Your file's contents are never sent to Devora's servers.
Can I clean a large CSV file?
Yes, up to 50MB. Files above 2MB are parsed with a background Web Worker so the page stays responsive while your file is processed.