DataDiff

Compare any two CSV or Excel files — instantly

Upload your files and get a full column-by-column analysis: data types, null rates, missing columns, and row-level lookups. No data leaves your browser until processing.

Up to 50,000 rowsUp to 200 columns

How it works

1. Upload

Drop your two files (CSV or XLSX) into the zones below

2. Analyse

DataDiff profiles every column: types, null %, population %

3. Explore

Drill into differences, look up individual rows by ID

File AUpload a file to compare

Drop your file here or browse

CSV, XLSX — up to 50k rows

File BUpload a file to compare

Drop your file here or browse

CSV, XLSX — up to 50k rows