Remove duplicate Excel rows by exact values

Step-by-step approach

Choose the correct worksheet with headers in its first row.
Decide whether duplicates mean all cells match or only a key matches.
Run the exact-row remover to export a CSV copy.
Review dropped-row count and compare important identifiers.
Keep the source workbook to preserve its original formatting.

Try the matching tool

Open XLSX Duplicate Row Cleaner to work on a local copy. Review the result before importing it elsewhere.

What this does not solve

Browser tools can validate known structures and transform available data, but cannot restore deleted or corrupted bytes, infer unknown business facts, or guarantee that a target system will import every field as intended.