UPCs
- Wrong check digits and lengths
- Codes broken by scientific notation
- Leading zeros lost in Excel
- One UPC on different products
For auto parts sellers
Find the errors in your product file before they go live
ProofSKU checks UPCs, part numbers, dimensions and weights in your auto parts files, shows which rows need fixing, and fills in or corrects weights and dimensions where our catalog is sure.
No sign-up needed for the sample.
What it checks
Dimensions and weight
- Empty or invalid values
- Placeholder cubes like 5 × 5 × 5
- Physically impossible density
- Likely centimeter and kilogram mix-ups
Products
- Empty brands and part numbers
- Duplicate products in the file
- Brand, part number or UPC that differ from our catalog
Auto parts only for now. Our catalog covers auto parts, so products from other categories will show as not found. UPC and file checks still work for them.
How it works
Upload your file
CSV or XLSX, up to 50,000 rows. We detect the columns, and you pick them if we are unsure.
See what is wrong for free
Get a summary of the whole file, up to 5 of your rows as we will correct them, and the price. Your first 5 files each month also show 20 sample rows.
Get the corrected file
We fill in and correct weights and dimensions where our catalog is sure, and restore lost UPC zeros. Every change is listed and highlighted.
Pricing
Free
$0
Summary, up to 5 corrected rows and price for up to 20 files a month. First 5 include 20 sample rows
Up to 1,000 updated rows
$9
One corrected file
Up to 5,000 updated rows
$19
One corrected file
Up to 20,000 updated rows
$39
One corrected file
Up to 50,000 updated rows
$79
One corrected file
Subscription
$99/mo
100,000 updated rows a month, unused rows do not roll over
You pay only for rows we fill in or correct. The check and the list of errors are free. If we have nothing to add to your file, there is nothing to pay. You see the price before paying.
Payments are launching soon. Until then, checks and corrected sample rows are free.
Free tools
- UPC check digit calculator
Check if a UPC, EAN or GTIN is valid, or calculate the missing check digit.
- Fix UPCs that lost leading zeros
Paste a column of UPCs from Excel and get the full 12-digit codes back.
- Centimeters and kilograms to inches and pounds
Convert package size and weight to imperial units and get the dimensional weight.
- Bolt pattern converter
Convert bolt patterns between millimeters and inches, like 5x114.3 and 5x4.5.
What happens to your data
- Your uploaded file is deleted right after the check.
- The result is deleted after 72 hours. The file name stays in your history.
- Brands and part numbers missing from our catalog are kept, not linked to your account, to improve the catalog.
- If you leave the catalog option on, product facts from your file (brand, part number, UPC, dimensions and weight) are kept to improve the catalog. You can turn it off for any file. Prices, stock and other columns are never kept.