Shopify catalogs break the same way Woo catalogs do.

Blank variant SKUs, $0 prices, products with no image, two variants sharing a SKU. You do not need a Shopify app. Export products and check the file in the browser.

Open the CSV check

How

1. Shopify admin → Products → Export → CSV for all products.
2. Open csv-check.html and drop the file. Nothing is uploaded.
3. Fix the SKUs that cannot sell. If you want a ranked Monday list of 20, that is the Store Audit (USD $149) — email the same CSV to info@shopgaps.com.

ShopGaps is not a Shopify App Store app and does not connect to your shop. Idle inventory (stock still on hand, no paid order in N days): Shopify dead stock how-to · two-file check (Variant Inventory Qty + Lineitem sku). Low stock: products CSV · Inventory CSV (On hand) · one-file check. Zero stock still taking orders: backorder.html. WooCommerce merchants who want an on-site plugin can use Catalog Audit.