Compare two CSV files and see a colour-coded diff view showing added, removed, and modified rows. Download a comparison report.
Open CSV Compare → free, no sign-inTwo versions of the same CSV — before and after a data migration, two exports from different dates, a client's version versus yours — and you need to know exactly what changed. CSV Compare uploads both files and shows a colour-coded diff: added rows in green, removed rows in red, modified rows highlighted for inspection. It also generates a downloadable diff report.
Data engineers validating migration results, analysts comparing dataset versions, QA teams checking whether a data export matches expectations — any situation where the difference between two CSV files matters.
No tutorials. No learning curve. Open it and get started.
No server uploads. Generates a downloadable comparison report as well as the visual diff — useful when you need to document the differences.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. CSV Compare was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
How does it match rows between files?
You can specify a key column — rows with the same key value in both files are treated as the same row and compared for modifications.
What if columns are in different orders?
The tool matches columns by header name, not position.
Can I compare files with different columns?
Yes — columns only in one file are treated as additions or removals.
Is a downloadable report available?
Yes — download a CSV diff report showing all changes.
Does it handle large files?
Processing runs locally, so performance depends on your device's memory.
Free. Instant. No sign-in. Open it and get the job done.
Open CSV Compare on Doathingy.com →