Universal CSV Comparator

High-performance client-side CSV comparison and validation

Fast Processing 100% Private (No Uploads)

Step 1: Select CSV Files

Click to select or drag Reference CSV
No files selected
Click to select or drag Target CSV(s)
No files selected

Step 2: Validation Settings

Rows with matching keys are aligned. Duplicate keys align in order (batch-wise).
Columns that will be kept from the reference file but not mapped or compared.
Suggested name when saving the comparison results file.

Step 3: Compare & Validate