Detect and repair blank, missing, or duplicate CSV headers entirely in your browser. Auto-fix in one click or edit each header manually. No file is uploaded to any server.
Scans all header names and flags blank columns and duplicates. Auto-fix names them systematically: col_1, col_2 for blanks; name_2, name_3 for duplicates.
Click Auto-Fix All to apply all corrections automatically, or type directly in any header field to fix individual issues. Preview updates instantly.