Free local browser utility · CSV only

Quick-check a supplier CSV before import

Spot basic CSV structure and data-quality warnings before you prepare new Shopify products. This is a first-pass checker, not a full Shopify import validator or a guarantee that a file will import.

Run a local CSV check

Choose a CSV file, then inspect candidate problems. All parsing takes place inside your browser; this page has no upload endpoint, account or analytics.

No data inspected.
Limitations: The checker examines CSV record widths, headers, repeated SKU candidates, and basic prices where recognizable columns exist. It does not map arbitrary supplier fields, validate your complete Shopify schema, check all images/metafields, verify SKU uniqueness in your store, inspect stock levels, or perform any import. Repeated SKUs or missing handles can be intentional. Always review the output yourself.

When you need an import candidate, exceptions and traceability

SupplierPreflight file preparation — from $49

Want to see the separate paid service deliverables first? Inspect the complete 10-row synthetic conversion and QA sample before ordering. This example is not a client case or a live-store import.

For one agreed new-product supplier CSV/XLSX sheet, our separate paid service prepares a Shopify import candidate, exceptions list, HTML QA report and source-cell history. Starter covers up to 100 variant rows and 8 MiB, delivered within three calendar days of agreed scope and funding. Your team controls the actual import.

Pay $49 securely for SupplierPreflight Starter (2 pilot places) · Read the exact Starter scope first

Direct purchase is processed on the Mille-owned DK STORE REVIEW Stripe account. Up to 100 variant rows, 30 columns and 8 MiB from one CSV/XLSX sheet. Human-reviewed delivery; no Shopify admin access or import. After payment we confirm mapping and a secure file transfer. A full refund or separately agreed quote is offered if the provided source falls outside the stated scope. Existing marketplace order option remains separate.

For 101–500 new-product variant rows (up to 30 columns / 8 MiB), see the separate $99 SupplierPreflight Standard on Freelancer (4 calendar days) or the corresponding Contra listing. Keep the entire order and payment on the chosen marketplace.

Ask about a paid file-preparation scope. Do not email confidential data before agreeing delivery and handling.

For a fuller walkthrough, read the 10-point supplier-file import readiness guide. Independent tool, not affiliated with or endorsed by Shopify.