Excel Dataset Matcher
Upload two .xlsx/.csv files, select a shared primary key, compare matches and differences, and export the result.
100% client-side: file parsing, matching logic, and export run only in your browser. No data is uploaded.
File A
Click or drag a .xlsx or .csv file here
Local parsing with primary-key matching and optional value comparison
File B
Click or drag a .xlsx or .csv file here
Local parsing with primary-key matching and optional value comparison
Match configuration
Comparison results
Upload both files and choose a shared primary key to see results.
Rows are matched by normalized key (trim + uppercase). Duplicate keys are processed sequentially.
Primary-Key Matching
Aligns rows from two datasets by shared key to highlight exact matches and missing records.
Difference Detection
Flags value mismatches and key-level deltas so you can audit changes before exporting.
Private Comparison
File parsing, matching logic, and export are executed locally with no dataset upload.