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PREFLIGHT CHECK

Mercari Shops CSV image name and URL checker

Check image name and URL columns for spaces, URL syntax, extensions and duplicates before import.

Check CSV

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

What this tool checks

  • Automatic image-column detection
  • http / https URL syntax
  • Spaces inside URLs
  • Basic image extension check
  • Duplicate image names or URLs

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 CSV image name and URL checker is a free browser-based preflight tool from BlueprintLab Tools. Check image name and URL columns for spaces, URL syntax, extensions and duplicates before import.

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.