CSV Diff Tool
Compare two CSV files side by side and see the differences highlighted. Free online CSV diff tool with advanced comparison options.
Upload Original
Select your original CSV file
Upload Modified
Select your modified CSV file
Configure Options
Set comparison preferences
Compare & Export
View results and export if needed
Drop your original file here, or click to select
Accepts CSV files
Drop your modified file here, or click to select
Accepts CSV files
See line-by-line differences with syntax highlighting. Support for both text-based and structured data comparison.
Choose between unified diff, side-by-side comparison, and structured data analysis for CSV files.
Export your diff results in standard unified diff format for use with version control systems or documentation.
Schema Analysis
Detect added, removed, or modified columns in your CSV files.
Row-Level Changes
Track additions, deletions, and modifications at the row level.
Cell-by-Cell Comparison
See exactly which cells changed and their old vs new values.
Data Type Detection
Automatically detect when column data types have changed.
Privacy & Security
Your files are processed locally in your browser. No data is uploaded to our servers, ensuring complete privacy and security of your CSV files.