Compare CSV files
Compare two CSV files by ID, SKU, email, or another key
Compare two files totaling up to 50 MiB by a shared key, then download a CSV summary listing each change, its key, and the changed column numbers.
CSV processing stays in your browser
Your files are not uploaded to a server.
Before CSV
CSV data, file names, headers, and cell values are not sent outside your browser.
Drag and drop a CSV file here
Up to 2 CSV files, 50 MiB total
Input encoding
After CSV
CSV data, file names, headers, and cell values are not sent outside your browser.
Drag and drop a CSV file here
Up to 2 CSV files, 50 MiB total
CSV data, file names, headers, and cell values are not sent outside your browser.
Compare rows with the same key
- 1Match rows by one key column and sort them into added, removed, changed, or unchanged.
- 2Show which columns changed and save every difference as CSV.
- 3Stop when a key is duplicated or blank, or when column names differ, instead of guessing.
How to compare CSV files
- 1Choose before and after files totaling up to 50 MiB.
- 2Check that the column names match and select one key column.
- 3Review the counts and changed columns, then download the differences if needed.
Continue after comparing
Remove duplicates, filter rows, choose columns, or convert the file format.