Remove Duplicate Rows from Excel & CSV
Deduplicate spreadsheet rows with precision. Select matching columns, configure case sensitivity and whitespace options, and download a clean spreadsheet with zero data loss.
Choose an Excel or CSV file or drop it here
Supports Microsoft Excel .xlsx, .xls, and standard CSV spreadsheets
Custom Column Matching
Deduplicate by specific keys (e.g. Email or Customer ID) or match across all spreadsheet columns.
XLSX & CSV Compatibility
Works seamlessly with Microsoft Excel workbooks, Google Sheets exports, and large CSV datasets.
100% Client-Side Privacy
Data scrubbing runs directly in browser RAM with zero server tracking or upload retention.
How DocxLab Removes Duplicate Spreadsheet Rows
Duplicate records in Excel or CSV databases lead to flawed analytics, wasted marketing spend, and inflated file sizes. DocxLab's in-browser engine deduplicates rows reliably without third-party cloud uploads.
Upload Spreadsheet
Select your .xlsx, .xls, or .csv file. The engine reads column definitions in temporary browser memory.
Configure Match Columns
Choose the exact columns that determine duplicates, with options for case sensitivity and whitespace trimming.
Download Cleaned File
Export a cleaned workbook containing only unique records, with all formatting preserved and duplicates purged.
Frequently Asked Questions about Excel Duplicate Row Remover
Can I deduplicate based on a single column like Email or ID?
Yes. You can uncheck all columns except the specific identifier you want to match on. Any row sharing that value will be treated as duplicate.
Will this tool delete or alter my original file?
No. Your uploaded file remains untouched on your computer. DocxLab generates a new, separate cleaned file for you to download.
Does this tool support both .xlsx and .csv files?
Yes. You can upload modern Microsoft Excel .xlsx files, legacy .xls files, and standard comma-separated .csv files.
Are my confidential business spreadsheets uploaded to a server?
No. Processing executes entirely inside your browser session using ExcelJS. Your spreadsheet data is never transmitted or stored.