Your data stays on your device.
From import to download, every step happens locally in your browser.
SEPARATE FILES. SAME CLEAN FINISH.
Many CSVs.
One tidy file.
Combine CSV files with matching columns, clean them in one pass, and download a single file. All without uploading your data.
01 Import02 Clean03 Export
Free trial · 3 files total · 500 rows eachDrop your CSVs here
One file or a matching batch. We’ll take it from here.
UTF-8 / UTF-8 with BOM · Up to 500 data rows per filePreview shows the first 50 rows. All values are treated as text.
A little structure goes a long way.
Import a file or take the sample for a spin.
Small details, kept intact.
SKUs stay text. Dates follow your format. You decide what changes.
Do it once. Save the recipe.
Turn your weekly cleanup into a few clicks with reusable rules.
A CLEANER WAY TO WORK
Bring your exports together.
Combine weekly reports, split exports, or matching customer lists. One header row, a consistent column order, and optional duplicate removal across the entire batch.
- 01Bring your files. Import a CSV or a batch of matching exports.
- 02Set your rules. Choose what to trim, remove, rename, or combine.
- 03Check the difference. Review row and cell counts, then export.
A SMALL EXAMPLE
Two exports, one useful list
Import two CSVs with the same headers in the same order, then select Merge into one CSV. Turn on duplicate removal to catch repeated records across both files.
BEFORE 4 records
| SKU | Name | Date |
|---|---|---|
| 00124 | Canvas tote | 03/14/2026 |
| 00124 | Canvas tote | 03/14/2026 |
| (empty row) | ||
| 00125 | Desk tray | 03/15/2026 |
AFTER 2 records · 1 cell trimmed
| SKU | Name | Date |
|---|---|---|
| 00124 | Canvas tote | 03/14/2026 |
| 00125 | Desk tray | 03/15/2026 |
THE LITTLE DETAILS
Good questions.
Straight answers.
Need a quick answer before you start? Here’s how it works.
How do I merge CSV files?+
Import two CSV files with identical headers in the same order. Enable Merge into one CSV, choose your cleaning rules, and click Clean files.
Do my files need the same columns?+
Yes. Headers and their order must match exactly. A mismatch is rejected with an explanation so values cannot silently land in the wrong columns.
Can I remove duplicates across both files?+
Yes. Enable merge and choose your duplicate key columns. The first matching row in import order is kept across the combined data.
Can I export each file separately instead?+
Yes. Leave merge off. With multiple files, Download ZIP packages the cleaned CSVs and a JSON difference report together.
How many files can I merge for free?+
The free trial accepts three successfully imported files in total on this browser, each with up to 500 data rows. If all three trial imports are available, a combined export can contain up to 1,500 data rows. The trial does not reset daily.
Is CSV export safe for spreadsheets?+
Cells and headers beginning with =, +, -, or @, including after whitespace, receive an apostrophe on export to prevent formula execution. This intentionally changes those exported values. Always review sensitive data before sharing.
LESS FUSS. BETTER FILES.