Match by SKU
Products are matched by their unique SKU, so a different row order won’t create false changes.
FREE SUPPLIER FEED CHECKER
Small feed changes.
No big surprises.
Compare supplier CSV or JSON files before your next import.
Catch missing products, price jumps and stockouts in one clear report.
Free. No account needed. Files stay in your browser.
1
Add your two feeds
Earlier feedYour starting point
Latest feedWhat’s new
Local comparison. Nothing uploaded.1 MB per file · 10,000 products
Which file formats work? See requirements & sample files
Use UTF-8 CSV with these columns, or a JSON array with the same keys. SKU is unique, case-sensitive text; price uses a decimal point, up to two decimal places and no thousands separator; stock is a nonnegative whole number; currency is three uppercase letters. Extra columns are checked for addition/removal, not changes to their values.
sku,name,price,stock,currency2
See what changed
The differences that deserve a closer look.
EXAMPLE REPORT
You’re exploring sample homeware data. Add your own feeds above to compare your products.
Products in latest feed66 in earlier feed
Products with changes6Including additions and removals
Changes to review3Missing items, stockouts & more
| Product | Change | Earlier | Latest | Review note |
|---|---|---|---|---|
Cotton towel set TOW-03 | Missing product | In earlier feed | Missing from latest feed | Confirm this product was intentionally removed. |
Stoneware mug MUG-01 | Price | USD 12.00 | USD 14.40 | +20.0% price change; meets your review threshold. |
Desk lamp LMP-02 | Stock | 14 | 0 | Now out of stock. |
Glass storage jar JAR-05 | Stock | 80 | 72 | Available quantity changed. |
Oak serving tray TRAY-06 | Price | USD 32.00 | USD 33.00 | +3.1% price change. |
Glass bud vase VASE-07 | New product | Not in earlier feed | New product | Review this product before importing. |
Showing 6 of 6 matching changes. A change is a signal to review, not proof of an error. No store, inventory or supplier data is modified.
A LITTLE CLARITY BEFORE YOU IMPORT
From two files to a clear next step.
Review the important changes
See before-and-after values. Missing products, stockouts and significant price shifts get your attention first.
Take the report with you
Download a CSV to investigate with your supplier. You decide what to change in your store.
IN DEVELOPMENT · MONITORING PILOTOne less feed
One less feed
to check by hand.
We’re preparing a small monitoring pilot for merchants with a recurring supplier feed. Request an invitation and tell us what keeps breaking.
$49/ month · proposed pilot price
- One supported supplier feed
- Daily checks and a source-linked change digest
- No automatic changes to your store
Pilot requests are open. Scheduled monitoring and checkout are not active yet. No payment is taken here.
Private files. Clear boundaries.
Feed comparison happens locally in your browser. We don’t upload your feeds or send them to an AI model. Pilot details are stored to review and respond to your enquiry and may be emailed to our support inbox. Hosting providers may retain standard technical logs. We don’t sell contact details or subscribe you to a newsletter.