CSV Diff
Upload two CSV files to compare them row-by-row. Added rows are highlighted green, removed red, and modified amber — with individual changed cells marked.
100% In-Browser Processing. Your files never leave your device.
Left CSV
Right CSV
About this tool
CSV diff compares two CSV files and identifies every row that was added, removed, or changed between them. This is useful for tracking data changes over time, auditing database exports, validating ETL pipeline outputs, or reviewing the impact of a data migration. Instead of comparing two large spreadsheets by eye, CSV diff highlights the exact changes in colour-coded rows so you can immediately see what is different.