FeedFix
FeedFix audits a Google Shopping feed, repairs the formatting errors, then re-audits the repaired file so you can see exactly what was fixed and what still needs your judgment. Everything runs on your own computer — your catalogue and pricing are never uploaded.
Get FeedFix — $29 one-timein_stock)GTINs that fail the check-digit test, duplicate ids, sale prices that aren't lower than the price, missing required attributes, promotional titles. You get the product id, the field, and a plain-English explanation — fabricating a barcode or a price would make things worse, so the decision stays yours.
In a seeded 12-product test feed with 21 planted problems, FeedFix repaired 10 automatically; the re-check confirmed the same 11 human-decision items remained (5 blocking errors) and 0 new issues were introduced.
.csv / .tsv feed exportWindows 10/11. No account, no subscription, no upload. Your original file is never modified.