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IMAGE CHECK

Mercari Shops bulk image upload preflight checker

Check image formats, the 8 MB per-image limit, 1 GB batch size and duplicate filenames before bulk upload.

Check images

🔒 Checks run entirely in your browser.

What this tool checks

  • jpg / jpeg / png format
  • 8 MB per-file limit
  • 1 GB selected batch limit
  • Duplicate filenames
  • Selections over 10,000 images

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 image upload preflight checker is a free browser-based preflight tool from BlueprintLab Tools. Check image formats, the 8 MB per-image limit, 1 GB batch size and duplicate filenames before bulk 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.