Compare CSV Files Online — Free CSV Diff Tool
Upload two CSV files to see added, removed, and changed rows highlighted cell by cell, in a table or plain-text view.
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How to compare CSV files
Upload your original and revised CSV files. Rows are matched by content, so reordered rows are recognized instead of showing as a delete-and-insert pair.
Switch to the Text view to see the same comparison as a classic line-by-line diff instead of a table.
Useful for comparing exported reports, database dumps, or spreadsheet-to-CSV exports where row order can shift between runs — no need to open a spreadsheet app or write a script first.
Does row order matter? — No — moved rows are detected and shown in place, not as changes.
What delimiters are supported? — Comma-separated files, with values quoted per the CSV standard.
Is my CSV data uploaded anywhere? — No — comparison runs entirely in your browser; files never leave your device unless you choose to save a comparison online.
Do I need Excel or another spreadsheet app? — No — this runs in the browser, so you can compare CSV files without opening Excel or any other software.
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