CSV Validator & Repair

Paste or load CSV/TSV, review concrete structural issues, choose safe cleanup options, preview the repaired table, and download a new file without changing the original.

Validate structure, then create a repaired copy

Repairs are deliberately conservative: normalize row width, make blank/duplicate headers usable, trim cell edges, remove blank rows, and optionally drop exact duplicate rows.

Load CSV/TSV

Delimiter

Delimited data

Trim cell edges Remove blank rows Normalize headers Remove exact duplicates

—Issues found

—Repaired shape

CSV and spreadsheet boundaries

CSV has no universal schema or type system. Delimiter detection and type summaries are practical heuristics, while repairs create a new copy instead of silently altering the source. Excel conversion focuses on cell values and simple worksheets rather than promising perfect preservation of formulas, macros, charts, external links, formatting or every workbook feature.