OptiSize matches each customer's measurements against every garment's real data, and shows every size color-coded: the right one in green, the others explained. Less doubt, fewer size-related returns.
Move the sliders: the recommendation reacts just like in the real fitting room.
Estimated build: Balanced
The fitting room's real recommendation engine, try it
01The benefits
What it changes for you.
Most tools treat size recommendation and visualization as two separate modules the shopper has to open one after the other. At OptiDress the size verdict comes from the avatar itself: the same object wears the garment and determines the size. The tools available on Shopify differ widely on this point.
Shoppers create their avatar once, with no photo: sex, height, weight, body type and, if they wish, five measurements. In the OptiDress interface, which they open from the product page, they see every size of the garment: the recommended one in green, the others explained — runs small, runs big, too small, too big.
They no longer wonder which size to pick; they compare, they understand, they add to cart. Their avatar is kept for thirty days on your store: on their next visit, they don't have to create it again.
04Product by product
One size per garment, not one size in general.
A medium doesn't have the same measurements from one cut to another, or from one brand to another. So OptiSize doesn't recommend “your size” in general: it recommends the size for that particular garment. For each product, you provide four measurements per size; OptiSize matches them with the shopper's body shape and picks the size that fits.
A fitted jacket and a loose sweater won't necessarily lead to the same size for the same person, and that's intentional. The three main approaches to size recommendation are compared in our comparison.
05Installation
What it takes to install.
OptiSize is part of OptiDress: same avatar and same installation as the fitting room. On Shopify, the app installs from the App Store and the interface slots into your theme without writing code. On WooCommerce, it's a WordPress plugin; elsewhere, a script. You provide your product measurements, OptiSize does the rest, in your brand's colors.
FAQ
Frequently asked questions.
How does OptiSize choose the size?
It matches the body shape the shopper declares (height, weight, body type and, if they wish, five measurements) with the four measurements per size you provide for each product, and picks the size that fits for that particular garment.
Does the shopper need to measure themselves?
No. Height, weight and body type are enough. The five measurements (shoulders, chest, waist, hips, inseam) are optional and refine the result.
Is a photo or an account required?
No. No photo is requested and no account needs to be created. The avatar is kept for thirty days on your store.
Where does the recommended size appear?
In the OptiDress interface, which the shopper opens from the product page: every size of the garment is shown there, the recommended one in green, the others explained.
Is OptiSize a separate product from OptiDress?
No. It is OptiDress's size recommendation: the same avatar is used to try the garment on and to choose the size, with a single installation.
Want to offer this experience to your customers?
OptiDress installs self-serve on Shopify, by assisted setup elsewhere, and turns your visitors into confident buyers.
