Choose your two versions
Keep the original export and an edited copy. Select both UTF-8 CSV files in the offline tool.
CATALOG CHANGE REVIEW KIT
See what changed
before you import.
Put your original and edited product CSVs side by side. Review exact changes and keep a receipt of the comparison.
Available now — $9, one-time purchase, digital ZIP
Buy the kit — $9USD 9, paid once, plus applicable tax shown at checkout. Digital ZIP delivery through Lemon Squeezy after successful checkout; get access through the order confirmation and receipt. Request a full refund within seven calendar days of purchase if the kit does not meet your needs by contacting atumara-orders@agentmail.to. Refunds use the original payment route through Lemon Squeezy; bank processing time varies. Statutory rights are unaffected.
ONE SMALL UPDATEFICTIONAL EXAMPLE
Before
| SKU | Product | Price |
|---|---|---|
| 001 | Canvas pouch | 10.00 |
| 002 | Desk tray | 18.00 |
After
| SKU | Product | Price |
|---|---|---|
| 001 | Canvas pouch | 12.00 |
| 003 | Notebook | 9.00 |
Changed
001 · Price 10.00 → 12.00Removed
002 · Desk trayAdded
003 · NotebookA REUSABLE REVIEW ROUTINE
Two files.
A clear record of the difference.
Match by an exact identifier
Choose a heading such as SKU. Each file needs one nonblank, unique value per record. Leading zeros and case stay significant.
Review and keep a receipt
Inspect changed fields, added or removed records, and column changes. Save the JSON receipt with the files you reviewed.
DOWNLOADABLE KIT
A tool and a way
to review its results.
Designed for ordinary product data in a desktop browser. The offline tool compares on your device and leaves both source files unchanged.
Release 1.0.2 is one ZIP delivered through Lemon Squeezy. The full End User License Agreement is shown at checkout and included in the ZIP: personal and internal business use, including your staff; no resale or public distribution of the kit as a competing download. No subscription, cloud service or promised future updates.
Offline HTML tool
Open a single file to compare two CSVs by one exact identifier. Review changed cells and record or column additions and removals.
JSON review receipt
Keep comparison totals, retained details and source coordinates. Reports can contain product values; handle them like the source files.
Checklist, examples and license
Follow a review checklist, try fictional before-and-after CSVs, and refer to the included use license and quickstart.
KNOW THE BOUNDARIES
Exact text.
Defined limits.
Reordering rows or columns alone is ignored. 001 and 1 remain different identifiers. A changed identifier appears as a removal and an addition.
Duplicate or blank identifiers, repeated headings and malformed CSV stop the comparison. If product variants share a SKU, use a genuinely unique identifier; keep the variants.
- Input
- UTF-8, comma-separated CSV
- Size
- 1 MB per file or pasted input
1,000,000 UTF-8 bytes - Structure
- 10,000 data records
200 columns per file - Detail list
- First 1,000 change entries
Totals still count all detected changes - Value previews
- Up to 256 text units
Clipped values are marked; use source coordinates to inspect the full value
Changed-cell counts cover matching identifiers and columns shared by both files. This review does not repair data, connect to a store, check every platform rule or approve an import. Check product facts and the destination's requirements separately.
QUESTIONS BEFORE YOU BUY
Have a catalog review in mind?
For help, contact atumara-orders@agentmail.to with your order reference or the tool version and error code. For a question before buying, send a brief description of what you need to compare. Do not email sensitive CSVs, card details or passwords.
Email a question