Dataset Comparison Tool
Dataset Comparison Tool lets you compare two CSV, XLSX, or JSON datasets in your browser. Select matching keys and review added, removed, and changed rows.
- check_circlePrivate browser processing
- check_circle0 credits
- check_circleCSV + XLSX
Runs privately in your browser
Run Dataset Comparison Tool
- 01Choose files
- 02Review changes
- 03Export result
Your input is processed in this browser session. Close the tab when you are finished with the result.
Complete
Results
What Dataset Comparison Tool does
Dataset Comparison opens two CSV, XLSX, or JSON files in your browser and matches their rows using the key columns you select. The result separates added and removed records from rows whose non-key fields changed.
Changed rows show the old and new values by field, which is easier to review than comparing file checksums or scanning two spreadsheets side by side. The files stay in the browser and the comparison uses no credits.
What you can do with Dataset Comparison Tool
Useful fields from the start
Review key selection, added rows, removed rows, changed fields in one organized result.
Results you can inspect
Work with the source file directly in your browser and review every change before exporting.
Export as CSV, XLSX, JSON
Keep the result in the format that fits your spreadsheet, audit, content, or development workflow.
Private local processing
The work stays in this browser session and does not use your global credit balance.
Where Dataset Comparison Tool fits
Perfect for
- checkCompare exports from two different dates
- checkCheck a catalog before publishing updates
- checkReview rows changed by a cleanup process
- checkConfirm a migration kept the expected records
What you get
- checkKey selection
- checkAdded rows
- checkRemoved rows
- checkChanged fields
How to use Dataset Comparison Tool
- 01
Open the two files
Choose the earlier and later CSV, XLSX, or JSON datasets from your device.
- 02
Select matching keys
Pick the column or column combination that uniquely identifies a row.
- 03
Review and export differences
Filter added, removed, and changed records, then save the comparison.
What to know before you run it
- infoA stable unique key produces the clearest comparison.
- infoDuplicate keys are reported for review instead of silently merged.
- infoFiles are processed locally and consume no scraping credits.
This tool works in your browser session. Keep the original file or source details until you have checked the exported result.
Questions about Dataset Comparison Tool
If your question is not covered here, send us a message and include the page, file, or result type you are working with.
Which file formats can I compare?
What should I use as the key?
Are my datasets uploaded?
Ready when you are
Run Dataset Comparison Tool
Upload two small datasets and review key selection and added rows.
Open the tool