Fitly: Size Chart & Size Guide

Add size charts and size guides that help shoppers pick the perfect fit

Fitly lets you build professional size charts and display them on your storefront — no theme code required. Assign charts to specific products, collections, vendors, or tags with flexible inheritance rules, so you set it up once and it applies everywhere it should. Charts appear as a floating button or inline block, matched to your store's look. Track chart views, engagement, and return-rate trends from a built-in Analytics dashboard, so you can see the impact for yourself.

• 15+ ready-made templates — table or image-based, launch a chart in minutes
• Smart assignment rules — apply charts by product, collection, vendor, or tag.
• Theme-native placement — floating or inline via Theme App Extension
• Full style control — icons, colors, padding, radius, and position
• Built-in Analytics — track views, engagement, and return-rate trends