Right size.
First try.
The shoe size recommender for your store. Shoppers name a pair they already own. The Sizely Fit Engine maps it to your brand, down to the millimetre.
Your shoppers’ size, from 450+ brands they already own
450+ brands · 370+ verified against official size charts · millions of size-to-size mappings · 56 shown here
Three steps. One right size.
They name a pair
Every shopper owns the answer. “I’m a 10 in Nike” is all we need. No scan, no quiz, no ruler.
The Fit Engine maps it
Length to the millimetre, width, and how each brand cuts, checked against the brand’s own chart.
They buy the right size
One definite answer, in your sizes and their system. Fewer wrong-size boxes coming back.
Every foot is different. Sizes pretend they aren’t.
A 9 is not a 9. Real feet differ in length, width and shape, and every brand cuts its sizes differently. The Fit Engine works from the dimensions of the foot, not the number on the tag.
Everyone else adds steps. We removed them.
| 3D scanners | Scanning apps | Fit quizzes | Size charts | Fit Finder | |
|---|---|---|---|---|---|
| Lives on your product page | |||||
| No app, no photo, no scan | |||||
| Two taps for the shopper | |||||
| A definite size, in your brand's sizes | |||||
| Verified cross-brand data, 450+ brands | |||||
| No hardware, licensing or per-scan fees | |||||
| Installed in minutes |
Every human owns a pair of shoes that fits. That’s the only input we need.
Size is the reason shoes come back.
On every product page. Or everywhere.
It detects the brand on each product page automatically: Nike page, Nike answer. Or run one site-wide finder across your whole catalog.
Inline link
A quiet text link right by your size selector. Opens the widget over the page.
Pop-up
A floating button in the corner you choose. One tap opens the recommender.
Docked panel
Lives in the corner and browses with the shopper. Never covers your page.
Your store. Your look.
Four themes and every knob behind them. It should look like you built it.
Adidas · EU 43⅓Paste it once. That’s the install.
Shopify
WooCommerce
BigCommerce
Squarespace
WixCustom sitesCopy your snippet
Configure the look in the Sizely app and copy one script tag, with everything baked in.
Paste it once
Step-by-step guides for Shopify, WooCommerce, BigCommerce, Squarespace, Wix and custom sites, inside the app.
Shoppers get their size
On every product page, in your sizes. You watch views and usage in your dashboard.
Auto-detects the brand on Shopify and BigCommerce. Set it once anywhere else.
Test it free. Go live on Store.
Every plan includes the configurator and a full live preview. Going live is included with Store (1,000 shopper views a month) and Brand (25,000 a month).
The Shoe Size Recommender, in plain terms.
What is the Shoe Size Recommender?
A small widget for your store. A shopper names a pair of shoes they already own, and it answers with their exact size in the brand they're buying, in the sizes you actually sell. It runs on the Sizely Fit Engine: 450+ brands keyed on foot length, with 370+ verified against each brand's own official size chart.
Do I need an app or a plugin?
No. It's one script tag that works on Shopify, WooCommerce, BigCommerce, Squarespace, Wix and any custom site. Paste it once; step-by-step guides for every platform are in the app. A native Shopify app is on the roadmap.
How accurate is it?
Every answer comes from the target brand's own published size chart, not a generic conversion table. 370+ brands are verified against their official charts, luxury houses cross-checked in their native language. When the data is thin, the widget says so instead of bluffing.
What about width?
Handled where it's real. For brands that sell multiple widths, the widget asks one plain question and recommends Standard or Wide. Brands that only make one width never get a width question.
Will it slow my page down?
No. The trigger is a tiny deferred script; the widget itself loads in an isolated frame only when a shopper opens it. It never touches your page's code or styles.
Can I match it to my store's look?
Yes, everything: four themes (Classic, Minimal, Luxury, Editorial), your accent colour, corner style, shadows, fonts, your trigger text, and only the brands you carry. Luxury stores get a sharp black-and-white look out of the box.
Where does it appear?
Your choice: an inline text link by the size selector, a floating button that opens it over the page, or a docked panel that browses with the shopper. On product pages it detects the brand automatically; site-wide it lets shoppers pick any brand you carry.
Which plan do I need?
Any plan lets you configure it and test the full widget in a live preview. Going live on your store is included with Store (1,000 shopper views a month) and Brand (25,000 a month).
Their size is already in their closet.
Put it on your shelf. One script tag, verified against the charts the brands publish themselves.