FAQ & Troubleshooting

General Questions

What is SizeMind?

SizeMind is a Shopify app that helps your customers find their perfect size. Customers enter their body measurements and receive personalized size recommendations based on your product's size charts.

How accurate are the recommendations?

Accuracy depends on your size chart data. With accurate, well-structured charts, the recommendation follows your own sizing. The algorithm accounts for measurement ranges and fit preferences to give the best suggestion, and the Analytics page shows how often customers buy the size SizeMind recommended.

Does SizeMind use AI?

SizeMind uses a measurement-based algorithm, not AI/ML. This means recommendations are deterministic and based purely on how customer measurements compare to your size chart ranges. The algorithm is predictable and transparent.

What languages are supported?

The widget supports 4 language options:

• English
• Spanish (Español)
• German (Deutsch)
• Bosnian / Croatian / Serbian (one shared option)

Need another language? Contact support@getsizemind.com.

What customer data does SizeMind collect?

A shopper's body measurements are saved only in their own browser (localStorage) so they don't have to retype them. To calculate a recommendation the measurements are sent to SizeMind with the request, but they are not saved in our database.

SizeMind does store some data on our servers, linked to your store:

• Usage events: an anonymous visitor ID (a random token stored in the shopper's browser), the product, the size we recommended, a confidence score, and the device type. These are kept for up to 24 months.
• Order records: when an order is placed in your store, Shopify notifies SizeMind and we save the order number, total, currency, the customer's email address and Shopify customer ID, and the line items (product, variant, quantity, price, size bought). If the shopper used SizeMind, the order is linked to their visitor ID and the size we recommended, so Analytics can show whether they bought the recommended size. These are kept for up to 36 months.

Customer erasure and data requests sent through Shopify are handled automatically, and everything we hold for a store is deleted when the store uninstalls and Shopify sends the shop-erasure request. See our Privacy Policy for full details, including retention periods.

Setup & Installation

Widget not showing on product pages

Check these common causes:

1. Missing product mapping: The product needs a size chart mapping. Go to Mappings and ensure the product's type, tag, or collection is connected to a chart.
2. Wrong template: In Theme Editor, make sure you're editing the correct product template. Some themes have multiple templates.
3. App block not added: Add the "SizeMind Widget" app block to your product template in Theme Editor.
4. Block hidden: In Theme Editor, make sure the "SizeMind Widget" block isn't hidden (the eye icon next to it).
5. Browser cache: Try a hard refresh (Ctrl/Cmd + Shift + R).

Can I use SizeMind with a vintage (non-OS 2.0) theme?

SizeMind is built for Online Store 2.0 themes. For older themes, contact support – we may be able to provide manual integration code.

How do I add the widget to multiple product templates?

Repeat the setup process for each template:

1. Open Theme Editor
2. Select the template from the dropdown
3. Add the SizeMind block
4. Save

Size Charts

What's the difference between body and garment measurements?

• Body measurements: Customer's actual body dimensions. "Size M fits chest 92-98cm" means a person with that chest size should choose M.
• Garment measurements: The actual dimensions of the clothing item. "Size M chest is 50cm" means the garment itself measures 50cm across.

Most brands use body measurements. If your supplier provides garment measurements, SizeMind automatically adds ease to recommendations.

Should I use ranges or single values?

Ranges are recommended. They provide better recommendations:

• Allow catching customers between sizes
• Enable alternative size suggestions
• Better handle measurement uncertainty

Example: Instead of "M chest = 95cm", use "M chest = 92-98cm".

My imported chart has wrong values

HTML import works best with simple tables. If values are wrong:

1. Delete the imported entries
2. Try copying a smaller portion of the table
3. Or enter values manually
4. Use CSV import for large charts

Can I copy a size chart?

Not currently. Create a new chart and manually enter the values, or export/import via CSV.

Recommendations

Customers getting wrong size recommendations

Check your size chart data:

1. Use the "Test Your Chart" feature to simulate recommendations
2. Verify measurement ranges are correct
3. Check if ranges overlap properly between sizes
4. Ensure measurement type (body vs garment) is correct
5. Review the sizing strategy for your garment type

Why is confidence low on some recommendations?

Low confidence (below 70%) typically means:

• Customer measurements are at the edge of a size range
• Customer is between sizes
• Some measurements fit one size, others fit another

This is expected and helps customers make informed decisions.

"Between sizes" appears too often

Your size ranges may have too much overlap. Review and tighten the ranges where sizes meet. Typical overlap should be 2-4cm.

Analytics

Analytics show zero data

Check these requirements:

• Data starts collecting once the widget is live on your store
• Allow 24-48 hours for initial data
• Ensure the widget is live and being used

Purchases not tracking

SizeMind tracks purchases via webhooks. If missing:

• Check if the customer used SizeMind before purchasing
• Webhook delivery can be delayed
• Contact support if persistent

Size match rate seems wrong

The match rate compares purchased size to recommended size. Factors:

• Customers may buy different size intentionally (gifts, etc.)
• Some may buy multiple sizes
• Rate is most meaningful with high volume

Pricing & Uninstalling

Is SizeMind really free?

Yes. Every feature is included, with unlimited size charts, no watermark and no trial. See SizeMind is Free.

I had a paid plan before. What do I need to do?

Nothing. The old plans no longer exist and all features are available. You can confirm you have no active SizeMind charge in Shopify Admin → Settings → Apps and sales channels.

What happens to my data if I uninstall?

After you uninstall, Shopify sends SizeMind a shop-erasure request, and when we receive it we permanently delete everything we hold for your store: size charts, mappings, settings, analytics and order records. If you want your data removed sooner, email support@getsizemind.com.

Collection Badges

Badges not showing on collection pages

Collection badges require these things:

1. Badges turned on: In Theme Editor → App embeds, make sure "SizeMind Badges (Global)" is toggled on (or that the "SizeMind Badges" block is added to the template).
2. Saved measurements: The customer must have entered measurements in the widget at least once. Badges use locally saved data — they won't appear for first-time visitors.
3. Product mappings: Each product needs a size chart mapping. Products without a mapping won't show a badge.

What's the difference between "SizeMind Badges" and "SizeMind Badges (Global)"?

SizeMind Badges (Global) is an app embed: switch it on once and it works on any page — collection pages, homepage featured products, related products sections, recently viewed, etc. SizeMind Badges is a block you add to one specific template, such as a collection page. Both use the same logic and settings.

Can badges show for customers who haven't entered measurements?

No. Badges require saved measurements. This is intentional — showing a generic "Find your size" badge on every product would be distracting. Badges are a reward for customers who engage with the size finder.

Measurement Breakdown

What does the measurement breakdown show?

When your measurements span different sizes, the breakdown explains how the algorithm chose the recommended size. Each measurement is shown with a color-coded status:

• Green (✓) — your measurement fits within the recommended size's range
• Amber (↕) — your measurement is below the range; the engine sized up to accommodate other measurements
• Red (↑) — your measurement is above the range

Why don't I see the breakdown?

The breakdown only appears when measurements don't all fit into one size perfectly. If all your measurements match the recommended size, you'll see "matches all your measurements perfectly" instead — no breakdown needed.

Still Need Help?

Can't find an answer? Contact our support team:

• Email: support@getsizemind.com
• Response time: We aim to reply within 1-2 business days