Shopify2025
Sizly — Smart Size Chart
Size charts that actually reduce returns.
A Shopify app that lets merchants build responsive, conditional size charts and attach them to products by tag, collection or rule. Rendered through a zero-CLS storefront widget.
6k+
Active stores
38ms
Avg. widget load
-14%
Return rate drop
Highlights
- Rule-based assignment engine matching charts to products at request time.
- Storefront widget ships as a 6KB script with zero layout shift.
- Bulk import/export and a live preview editor with undo history.
Stack
Next.jsNode.jsPostgreSQLShopifyFirebase