For retailers
Retailer & API integration
One sizing brain across web, store and kiosk.
Step 1
Upload sizing guide
Brand uploads CSV / API
Step 2
SKU + chart + material
Stored in product DB
Step 3
FitIQ API
Returns recommended size
Step 4
Online · In-store · Kiosk
Consistent everywhere
−47%
Returns due to bad fit
+22%
Conversion on sized items
4.9★
Customer fit confidence
POST /v1/fit-recommendation
POST /fit-recommendation
Authorization: Bearer rt_***
{
"profile_id": "FIQ-8K2L-4M9N",
"sku": "NF-OXF-22-WHT",
"brand": "Northfield & Co.",
"fit_preference": "regular"
}
→ 200 OK
{
"recommended_size": "M",
"confidence": 0.94,
"fit_notes": [
"Best match for regular preference",
"Cotton — minor shrink expected"
],
"alternates": ["L (relaxed)", "S (slim)"]
}What retailers send us
Product metadata stays with the brand — FitIQ stores only what's needed to recommend.
- SKUStock unit identifier
- Size chartPer-size measurements in cm/in
- Material compositionStretch & shrink behavior
- Fit typeSlim / regular / relaxed / tailored
- Care infoWash temperature, post-wash shrink
Privacy-first by design
Brands never receive customer measurements — only the recommended size and confidence.