Agents for Data

CSV Diff Tool

Compare two CSV files side by side and see the differences highlighted. Free online CSV diff tool with advanced comparison options.

Free to useNo upload limitsPrivacy focused
How to Use the CSV Diff Tool
1

Upload Original

Select your original CSV file

2

Upload Modified

Select your modified CSV file

3

Configure Options

Set comparison preferences

4

Compare & Export

View results and export if needed

Original File
Click anywhere to select a fileor drag and drop a file here
Accepts CSV file
Modified File
Click anywhere to select a fileor drag and drop a file here
Accepts CSV file
Advanced Comparison

See line-by-line differences with syntax highlighting. Support for both text-based and structured data comparison.

Multiple View Modes

Choose between unified diff, side-by-side comparison, and structured data analysis for CSV files.

Export Results

Export your diff results in standard unified diff format for use with version control systems or documentation.

CSV-Specific Features

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.

Frequently Asked Questions

More CSV Tools

CSV Filter

Filter CSV data by column values

CSV Sort

Sort CSV files by any column

CSV Merge

Combine multiple CSV files

CSV Sample

Download sample CSV files

CSV Generate

Generate test CSV data

CSV to JSON

Convert CSV files to JSON

CSV to Parquet

Convert CSV files to Parquet

CSV to TSV

Convert CSV files to TSV

CSV to Excel

Convert CSV files to Excel