SheetCleaner
Free Online Excel Duplicate Remover - Multi-Column & Cross-Sheet
Professional Excel duplicate remover with 9 smart strategies. Merge customer lists, clean data, remove duplicate emails - all processed locally in your browser. Completely free, unlimited rows.
Drag Excel file here, or click to select
Supports .xlsx, .xls, .csv formats
No file?Try with test data
Upload File
Drag and drop or click to select Excel file
Choose Rules
Select deduplication fields and retention strategy
Download Result
Preview results and download cleaned file
Why Choose SheetCleaner?
Professional, efficient, and secure Excel data processing tool that makes data cleaning simple
Online Tool, No Installation
Use directly in your browser, no software download required
Simple Operation, 3 Steps
Upload file β Select rules β Download results, simple and efficient
Complex Multi-column Deduplication
Support deduplication by multiple field combinations for complex business needs
Compatible with Major Spreadsheets
Supports Excel, WPS, Numbers and other software formats
Industry-Specific Optimization
Pre-configured solutions for e-commerce orders, CRM contacts, email marketing lists, and HR databases
Supports Million-Row Data
Completely free, supports unlimited data processing
Data Security & Privacy
Complete local processing, zero uploads, 100% protection for your data privacy and security
Local Browser Processing
All data processing happens locally in your browser, data never leaves your device, ensuring absolute privacy and security
No Network Transmission
File parsing and deduplication processing happen entirely locally, no uploads to any servers, eliminating data leak risks
Offline Available
Tool can be used offline after loading, process sensitive data with network disconnected, ensuring data stays in local environment
Instant Processing
Files are processed immediately after upload, no waiting required, data is cleared from memory instantly after processing, leaving no traces
Zero Server Dependency Security
Pure frontend architecture, no server storage, no data collection, fundamentally eliminating any possibility of data breaches
Frequently Asked Questions
Answers to the most common questions to help you better use our service
Clean Your Data in 3 Clicks
Upload your Excel file and get clean, deduplicated data instantly. No registration, no upload to servers, completely free.
Free to Use
Completely free, no registration
Safe & Secure
Data processed locally, never uploaded
Instant Processing
Complete data cleaning in seconds