Free ONNO tool

Duplicate SKU Checker

Detect repeated SKUs, empty SKU rows and likely variant collisions before they create feed or Shopify import problems.

Input

  • - SKU column
  • - Optional handle, variant option and title fields
  • - CSV or pasted row sample

Output

  • - Duplicate groups
  • - Affected row numbers
  • - Severity by issue type
  • - Exportable fix report after sign in
Get full report

Basic input is not published. Full reports require sign in so private files stay attached to your organization.