Remove Duplicates - Free Desktop App
Remove duplicates from CSV, Excel, Parquet files offline. Handle files with billions of rows that Excel can't open. Fast, private, no upload required.
Remove Duplicate Rows
Clean data from billions of rows
Remove duplicate rows from CSV, Excel, and Parquet files. Choose which columns to check for duplicates.
Note: Handle files with billions of rows that Excel can't even open.
Why Desktop Duplicate Removal Beats Online Tools
| Feature | Online Tools | Diwadi Desktop |
|---|---|---|
| Upload Required | ❌ Required | 🎯 Never |
| File Size Limit | ❌ 50MB max | ♾️ Unlimited |
| Speed | ⏳ Slow (upload/download) | ⚡ Instant |
| Batch Processing | ❌ 1 file | ✅ 1000s |
| Privacy | ⚠️ Risky (cloud upload) | 🔒 100% Local |
| AI Features | ❌ No | 🤖 Yes |
| Offline | ❌ No | ✅ Yes |
| Cost | Free | Free ✅ |
Real-World Use Cases
Customer Database
10M customer records with duplicate emails
Excel: Can't open (over 1M limit)
Diwadi: Cleaned in 60 seconds → Removed 2.3M duplicates
Sales Transactions
50M transaction records with duplicate IDs
Excel: Impossible
Diwadi: Parquet format → Cleaned in 2 minutes
Email Marketing List
5M email addresses from multiple sources
Online tools: File size limit, privacy risk
Diwadi: 100% private, instant → 1.2M duplicates removed
Data Migration
Multiple CSV exports merged with overlap
Manual: Risky, error-prone
Diwadi: Batch clean all files → 100% accurate
How It Works
Download & Install
Takes just 30 seconds. No account, no credit card required.
Browse & Select Your Data Files (CSV, Excel, Parquet)
Navigate your files like a regular file browser. Batch processing supported.
Get Cleaned Data Files (duplicates removed) (Instant)
Processing happens locally on your computer. No upload wait.
Why Choose Diwadi Desktop?
Privacy First
Files never leave your computer. No cloud upload, no data collection, 100% local.
Lightning Fast
Process files 10x faster than online tools. No upload wait, no download wait.
No Limits
Convert unlimited files of any size. Batch process thousands in one click.
AI-Powered
Smart formatting detection, auto-cleanup, better accuracy.
Works Offline
No internet required. Perfect for flights, secure environments.
Free to Use
No trial limits, no watermarks, no credit card required.
Frequently Asked Questions
Why use Diwadi to remove duplicates instead of Excel?
Diwadi handles unlimited rows (Excel maxes at 1M), processes files 10-100x faster, works with files Excel can't open, and keeps your data 100% private (no cloud upload). Perfect for large datasets.
Can I remove duplicates from files larger than 1M rows?
Yes! Diwadi handles CSV files with billions of rows. Excel has a hard 1M row limit and can't open files larger than that. Diwadi processes even 100M+ row files efficiently.
How does duplicate detection work?
You can remove duplicates based on: 1) All columns (exact row match), 2) Specific columns (e.g., email, ID), or 3) Custom combination of columns. Diwadi preserves the first occurrence and removes subsequent duplicates.
What file formats are supported?
Remove duplicates from CSV, Excel (XLSX/XLS), Parquet, TSV, and JSON files. You can also convert between formats during the cleaning process.
How fast is it for large files?
Very fast! For a 10M row CSV, Diwadi typically completes in 30-60 seconds. For Parquet files, it's even faster. Excel would crash trying to open the same file.
Will my original file be modified?
No! Diwadi creates a new cleaned file, leaving your original untouched. You'll get a report showing how many duplicates were found and removed.
Can I batch process multiple files?
Yes! Select folders and remove duplicates from hundreds of files at once. Each file is cleaned separately with a detailed report. Perfect for cleaning entire databases.
Is duplicate removal free?
Completely free with unlimited files and rows. No file size limits, no watermarks, no credit card required.
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