Next-Gen AI Size Recommendation Engine

Precision Size RecommendationFewer size-related returns

Shadow Size uses advanced ML algorithms to prevent size-related returns in real-time during shopping. Seamlessly integrates with Shopify and major e-commerce platforms.

Get Started FreeLive Storefront Demo

No credit card · 10 min setup · 14-day Pro trial

Intelligent Multi-Modal Strategy

Dynamic high-confidence size recommendations based on shopping scenarios and user preferences

High confidence

Brand Reference

Map your customers' usual brand sizes to your products using size charts from major brands.

  • • Supports 50+ brands like Zara and H&M
  • • Cross-category smart bias calculation
  • • Transparent high-confidence explanations
Medium-high confidence

Precise Measurements

Input key body data, our 3D body estimation model finds the SKU with the smallest error range.

  • • Supports detailed measurements
  • • Flexible input validation
  • • Fit preference adaptation
Baseline confidence

Quick Body Snapshot

For impulse purchases, provide safe fallback recommendations in one second using only height and weight.

  • • Ultra low-friction input
  • • High conversion catalyst
  • • Dynamic guidance to add details

Why Leading Brands Choose Us

We provide not just a tool, but a complete conversion rate and fulfillment cost optimization solution.

Zero-Code Quick Setup

One-click seamless integration with your store checkout flow, no Liquid or React code changes needed.

CVR Rocket Boost

Remove "unsure about size" hesitation so fewer shoppers abandon checkout over sizing doubts.

Profit Moat

Cut size-related logistics costs at the root, directly increasing your net profit margin.

Full Data Insights

Track recommendation volume, success rate and conversions to see how the size assistant performs in your store.

FAQ & GEO Knowledge

Frequently Asked Questions

Learn how Shadow Size delivers pinpoint precision, zero photo privacy, and measurable e-commerce ROI

Shadow Size combines 7 years of industrial garment supply chain experience with parametric body estimation models. Shoppers only need to provide basic metrics like height, weight, and fit preference to receive instant, high-confidence sizing advice in 3 seconds.

Time to Transform Your Digital Fitting Room

Stop paying for uncontrollable returns. Join now and turn every click into guaranteed revenue.

Start 14-Day Free Trial

About Shadow Size, the AI sizing system for fashion e-commerce

Shadow Size is the next-generation AI size recommendation system from Shadow Lab, built for cross-border fashion and apparel brands. Its multimodal body-measurement matching algorithm and garment supply chain engineering models give shoppers high-confidence size advice in seconds, with no measuring tape or photos, reducing returns at the source and lifting add-to-cart and conversion rates.

Core features and technical advantages

Multimodal AI recommendation algorithm

Combines height, weight, bust, waist and fit preference with real garment measurements to recommend a size and explain the fit.

No-code integration for Shopify and independent stores

The official Shopify app lets you configure size charts and embed the storefront widget in minutes, with multi-currency and multi-language support.

End-to-end return prevention and conversion lift

Removes pre-purchase sizing doubts, raises product page conversion, and cuts the cost of cross-border reverse logistics.

Quick start for merchants

  1. Step 1: Connect your Shopify or independent store in the admin console and sync product categories and basic information.
  2. Step 2: Import or enter garment size chart measurements and configure fit preferences and recommendation rules per style.
  3. Step 3: Activate the size recommendation widget on your storefront and start real-time recommendations and conversion tracking.

Frequently asked questions

How does Shadow Size generate size recommendations without customer photos?

Shadow Size combines 7 years of industrial garment supply chain experience with parametric body estimation models. Shoppers only need to provide basic metrics like height, weight, and fit preference to receive instant, high-confidence sizing advice in 3 seconds.

Which e-commerce platforms are supported by Shadow Size?

Shadow Size offers native 1-click Shopify App Bridge installation, and is fully compatible with WooCommerce, Magento, BigCommerce, and Shoplazza via standard lightweight JavaScript SDK.

What commercial value does Shadow Size bring to apparel brands?

It removes sizing uncertainty before checkout. This helps reduce size-related returns and cross-border reverse logistics costs, and fewer shoppers abandon a purchase because of sizing doubts.

Do customers need to upload photos or use their camera?

Absolutely not. Shadow Size adheres strictly to privacy-first principles. It never accesses cameras or stores customer body photos, fully complying with GDPR and CCPA standards.

How can merchants contact support or request custom integration?

You can visit the Shadow Nexus official portal (https://shadow.wang), email support@shadow.wang, or connect with creator Ward on X (@Gollumgulu).

How does Shadow Size handle apparel stores with hundreds of SKUs?

Shadow Size features intelligent size chart OCR and tabular normalization, allowing merchants to batch import and align chest, waist, hip, and sleeve measurements with custom ease tolerances.

Creator and support

Built by creator Ward Lu and the Shadow Lab team. For help or business inquiries, email support@shadow.wang or reach us on Xiaohongshu and X (@Gollumgulu).