Blog · July 10, 2026

Mass Apply a size ratio across your Shopify catalog

Wholesale apparel catalogs rarely need one pack at a time. Mass Apply lets you take a saved ratio template — for example 1-2-2-1 — and apply it across matching products in your Shopify store in a single job.

Who Mass Apply is for

Merchants who already know their size runs and want to create pre packs across many styles or colorways without repeating the Create Pre Packs flow for every product. It is especially useful after you import a new season or expand into wholesale.

How it works

1. Open Mass Apply in the Simple Pre Packs app.
2. Choose the ratio template you want to apply.
3. Preview which products and colorways will match or be skipped.
4. Start the job. The app creates packs in batches and records results.
5. Open the job report to see what succeeded, what was skipped, and why.

What gets skipped

Products that do not match the template’s size range, colorways that already have a pack, or variants that cannot form a valid bundle are skipped instead of failing the whole run. The report keeps that transparent so you can fix gaps with Create or Auto-apply later.

Related workflows

Pair Mass Apply with auto-apply templates for new products going forward, and use the missing packs index to catch anything the job left behind.