CSV Diff & Compare
Paste two CSV tables to see highlighted line-by-line differences, a change summary, and a similarity percentage. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
two CSV tables
Example Output
changed cells & rows
How to Use
- 1Paste the first CSV tables (A) in the left box and the second (B) in the right box.
- 2Adjust the options if needed (ignore case, whitespace, or empty lines).
- 3Click Compare (or press Ctrl+Enter).
- 4See the highlighted differences, a summary of how many changes there are, and the similarity percentage. Switch between side-by-side / unified / inline views.
About CSV Diff & Compare
CSV Diff & Compare compares two CSV tables row by row and cell by cell. You see which rows were added or removed, and which cell values changed, with the row and column number.
Great for comparing data exports, lists, or spreadsheets saved as CSV.
FAQ
What is the difference between "diff" and "compare"?
Both are done by the same tool. "Diff" highlights the lines/parts that changed (added/removed), while "compare" shows how similar the two inputs are (similarity percentage + summary). You get both at once here.
Is my data sent to a server?
No. The entire comparison is computed in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.