Private by architecture
This build reads the file in browser memory. It has no upload endpoint, analytics collector, remote script, or AI API.
Shopify product CSV preflight
Catch import problems before Shopify does.
Your selected CSV stays in this browser. See exact affected rows and columns, apply only conservative fixes, and download a validation report.
Check one product CSV
UTF-8 CSV, up to 15 MB. This build checks a documented subset and does not guarantee Shopify import acceptance.
Choose the matching Shopify import intent. Update checks identifiers, but this local tool cannot confirm which existing products Shopify will overwrite.
No file selected.
Validation result
Preflight summary
Showing only the first 2,000 findings. This CSV may contain more issues than the summary and report include.
Research-only: read about the $9 Local Repair Pack hypothesis| Severity | Rule | Row | Column | Explanation | Fix |
|---|
Conservative fixes
Only unambiguous formatting changes are automatic. Product meaning, prices, variants, and formulas are never guessed.
Honest scope
Store state, image reachability, taxonomy validity, and overwrite consequences can require Shopify context and remain clearly unverified.
Practical CSV guides
Understand the problem before changing the file.
Illegal quoting and UTF-8
Distinguish malformed CSV structure from visible punctuation and choose a safe re-export path.
Invalid Shopify CSV headers
Check current case-sensitive headings, required identifiers, and important dynamic-column exceptions.
Validation failed: options are not unique
Find repeated expressed option combinations without mistaking image-only continuation rows for variants.