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PREFLIGHT CHECK

Mercari Shops bulk update CSV preflight checker

Check product IDs, SKU IDs and multi-column requirements for inventory and image updates before upload.

Check CSV

🔒 Analysis runs in your browser. The CSV file itself is not uploaded to BlueprintLab.

What this tool checks

  • Product ID presence
  • Five required fields for SKU stock changes
  • SKU_ID for SKU information changes
  • Image update flag and image name pairing
  • Row/header column count

What this tool cannot verify

The tool does not claim to verify live service-side master data, account-specific state, or network reachability that cannot be established reliably in-browser. The service’s own validation remains authoritative.

About this tool

Mercari Shops bulk update CSV preflight checker is a free browser-based preflight tool from BlueprintLab Tools. Check product IDs, SKU IDs and multi-column requirements for inventory and image updates before upload.

No account is required, and file contents are processed locally in the browser. Use it as a final check before upload.

How to use

  1. Choose the file(s) to check.
  2. Run the check.
  3. Review issues and download the report if needed.