Free CSV Comparison Tool - Compare Two CSV Files Online

How to Compare Two CSV Files Online

1. Add your CSV data:

   • Copy/paste directly into the text areas
   • Upload CSV files using the file chooser
   • Import from Google Drive
   • Use sample data to test the tool

2. Configure parsing options:

   • First row as headers
   • Custom delimiters
   • Skip empty lines
   • Enable/disable dynamic typing

3. Click Compare to view differences in:

   • Table View: Side-by-side comparison with changes highlighted
   • Text View: Plain text difference view

Features

• 📊 Smart CSV parsing and comparison
• 🔄 Multiple export formats (Excel, CSV, HTML)
• 📑 First row header detection
• 💾 Custom delimiter support
• 🔍 Row-by-row difference highlighting
• 📱 Mobile-friendly interface
• 🔒 Browser-based processing
• 🔗 Share comparisons online

Advanced Options

Parsing Settings

• Auto-detect delimiters
• Handle quoted fields
• Skip empty lines
• Dynamic typing for numbers
• Custom header handling

Export Options

• Excel (XLSX) with formatting
• CSV with original structure
• HTML with highlighted changes
• Plain text comparison

Common Use Cases

• Data validation
• Database exports comparison
• Log file analysis
• Spreadsheet changes review
• Configuration file comparison
• Data migration verification

Privacy & Security

• Browser-Based: All processing happens locally
• No Server Upload: Files stay on your device
• Optional Sharing: Choose to save and share results
• Temporary Storage: Shared comparisons auto-delete
• No Registration: Use all features without account

Tips for Best Results

1. Data Preparation:

   • Use consistent delimiters
   • Clean up extra whitespace
   • Ensure consistent quoting
   • Remove BOM characters

2. Comparison Options:

   • Enable headers for labeled data
   • Use dynamic typing for numbers
   • Set appropriate delimiters

3. Large Files:

   • Split into smaller chunks
   • Use table view for structure
   • Export results for offline use