Browser-local CSV converter, Shopify product-file checker and duplicate SKU finder for online sellers
About SellerFile Studio
A set of free browser-based CSV tools for merchants: convert supplier columns to Shopify product files, diagnose product CSV formatting issues, and report duplicate SKUs with row numbers. Files are processed locally in your browser; no account or upload to a server. Independent, not affiliated with Shopify.
✓ VerifiedOct 22, 2026
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