Remove Duplicate Rows
Remove duplicate rows from spreadsheet data.
Remove duplicate rows from spreadsheet data.
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Tool guide
Remove Duplicate Rows from Excel Online
Deduplicate one selected Excel worksheet by comparing every parsed value in each row. The comparison trims leading and trailing whitespace, is case-sensitive, keeps the first matching row, and removes later exact normalized matches.
Steps
How it works
- Choose one XLS or XLSX workbook.
- Select the worksheet whose rows you want to compare.
- Compare normalized full-row values and remove repeated matches.
- Download the rebuilt XLSX workbook and review the removed-row count.
Highlights
Key features
- Compares complete rows rather than one selected key column.
- Trims leading and trailing whitespace from each parsed cell before comparison.
- Uses case-sensitive string comparison and keeps the first matching row.
- Treats a numeric value and equivalent text as the same after string conversion.
- Reports how many repeated rows were removed from the selected sheet.
Use cases
Common uses
- Remove repeated records from a flat worksheet table.
- Clean exact duplicate rows from imported spreadsheet data.
- Keep the first occurrence of repeated full-row values.
- Prepare a selected sheet for analysis or export.
Notes
Limitations to know
- Only one selected worksheet is deduplicated; all-sheet and multiple-workbook batch processing are unavailable.
- Every cell in the normalized row participates in comparison; selected-column, fuzzy, or similarity matching is not supported.
- Comparison is case-sensitive, trims only outer whitespace, and does not collapse repeated internal spaces.
- The header row is not specially protected, blank rows collapse to one, and the first matching row is retained.
- Worksheets are rebuilt from parsed values, so formulas, styles, merged cells, hidden-row state, charts, images, macros, and advanced workbook features may be lost.
FAQ
Frequently asked questions
How are duplicate rows identified?
The tool converts every parsed cell to a trimmed string and compares the resulting complete row exactly.
Is duplicate comparison case-sensitive?
Yes. For example, Formatza and formatza are treated as different values.
Are extra spaces ignored?
Leading and trailing whitespace is ignored, but repeated spaces inside a value are not normalized.
Which duplicate row is kept?
The first normalized row is kept and later matching rows are removed.
Can I compare only selected columns?
No. The current tool compares the complete row.
Is the header row always protected?
No special header rule is applied; it participates in the same full-row comparison as other rows.