Open large CSV files and export cleaner spreadsheets

Built for Practical CSV Cleanup

CleanCSV is useful when CSV files arrive from different systems, spreadsheets, or exports and you need a calmer way to inspect them before sharing or converting them.

Check Encoding Before Anything Else

If Korean, Japanese, or Chinese text looks broken, CleanCSV helps you compare common encodings and preview the result directly in the browser before moving on.

Preview, Filter, and Export

After checking rows and columns, you can review headers, filter the visible data, and export a cleaner `.xlsx` file for spreadsheet workflows.