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Conversions depend on brand and model. Always use the manufacturer’s guide.
1. Size conversions
1. Create or import a guide with exact manufacturer conversions.
The first column must match your product’s size values. Enter the manufacturer’s exact conversions; there is no universal shoe-size formula.
Paste tab-separated cells from Excel or Sheets. First row: Product size, EU, US… The import replaces the current table after preview.
Keep a source so you can check future changes.
Leave blank for automatic detection. Set it if your products use a different name.
2. Assignment rules
2. Add matching rules by vendor, product type, tags, collections or selected products.
Conditions across fields are combined. Comma-separated alternatives within a field match any value. A higher priority wins; equal priorities require a choice.
Duplicate creates an independent draft without assignment rules. Pausing stops publication and releases a plan slot.
The product list shows the last completed publication. Save and publish to refresh matching results.
3. Products & conflicts
4. Resolve overlaps by choosing a guide for the product, editing rules, or setting a priority.
A saved choice takes priority over rules until you switch back to automatic.
The worker publishes in batches. Products with conflicts or missing sizes stay hidden until resolved.
4. Storefront setup
5. Add the app block in the theme editor and test different product variants on mobile and desktop.
Open your theme editor, choose the product template, add the Shoes Size Conversion app block next to the size selector, then save. Repeat for other product templates.
5. Plans
All features in every plan. 7-day free trial. Only active guides count. No charges per visit or product.
Drafts do not count toward your plan. Activate when the table is complete.
Trials and subscription changes are confirmed in Shopify.
Export JSON / Import guide JSON
Export your guides as JSON for backup or transfer. Import creates a new draft; it never overwrites an existing guide.