CSV cleaner and merger
Import multiple CSV or TSV files, align columns by header name, trim whitespace, remove blank and duplicate rows, see skipped malformed rows and download a clean CSV or TSV.
Try the tool
Free professional tools that run in your browser; no signup or server uploads.
Prepare usable spreadsheet data
Select up to 20 files, 10 MB each. The tool supports quoted CSV cells and tabs, matches identical column names, and lets you keep or remove duplicates and blank rows. XLSX files are not supported.