Spreadsheet readability is not import validity.
Humans tend to look at the rows. Importers also care about the exact column structure and encoding. The free preflight makes those mechanical checks repeatable.
SHOPIFY CSV · HEADER / STRUCTURE QA
A duplicate or malformed header can poison the whole import before product logic even starts.
Header problems are boring, which is exactly why they are worth checking automatically. The CSV preflight looks at the file structure first and only then moves into Shopify-specific checks.
ShadowOrders product: Shopify CSV Preflight. This page describes one specific use case; the technical boundary is the same as the underlying product.
Get the structural verdict first
Upload the product CSV. A clean READY verdict stays free. Findings unlock the optional $1 detailed report rather than forcing payment before you know there is a problem.
What this does not claim.
No Shopify credentials; no automatic repair is claimed by the preflight itself.
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