Upload Your Files
Drag and drop or click to upload your files
File 1
Upload CSV, Excel, or JSON file
Drag & drop a file here, or click to select
Supports: CSV, Excel (.xlsx, .xls), JSON
File 2
Upload CSV, Excel, or JSON file
Drag & drop a file here, or click to select
Supports: CSV, Excel (.xlsx, .xls), JSON
Join Configuration
Upload both files to configure the join operation
Why File Compare?
Everything you need for efficient data integration
Lightning Fast
Process millions of rows in seconds with optimized browser-native algorithms.
100% Private
All processing happens in your browser. Your data never leaves your device.
Multiple Formats
Support for CSV, Excel (.xlsx, .xls), and JSON files with automatic type detection.
Frequently Asked Questions
Everything you need to know about using File Compare