COMPARE / PROCESSED LOCALLY

CSV comparison

Find changed rows and cells in CSV exports, with optional key matching.

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Original CSV

0 charactersUTF-8 text

Updated CSV

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Comparison settings

Key column (optional) Ignore edge whitespace in values Ignore case in values

CSV/TSV exports only, not XLSX files. Headers and key values match exactly; key values must be unique. Column order is ignored. Data row numbers exclude the header. Blank rows are skipped; original cell values are kept in the report. Long cells and large reports have shortened previews; download for the full content.

Local processing · up to 1 MB per input

How it works

Paste your content or open a supported local file.
Choose your settings, then preview or process it.
Copy or download the result. Clear your work when finished.

A few useful details

Compare CSV/TSV exports by data row position or by an exact, unique key column. Column order is ignored. Cell whitespace and case rules are optional. The report includes added and removed columns; XLSX is not supported.

Up to 1 MB, 10,000 data rows and 100 columns per CSV. The screen shows up to 200 changed rows; download the complete report as JSON. File contents are not saved between visits.