Frame Width and Face Shape: Helping Shoppers Pick Glasses Online

To help shoppers pick glasses online, show each frame's total width, lens width, bridge width and temple length, then let them compare those numbers with a pair they already own. A live-camera try-on adds the look that numbers can't show.

Glasses are one product where fit and style matter at once. A frame that is too wide slides down, while one that is too narrow pinches. The same ideas apply across fashion, as in a virtual fitting room for clothing websites. This guide covers the measurements and how to present them.

What do the numbers on a frame mean?

Most frames carry three numbers, often printed on the inside of the arm, such as lens width, bridge width and temple length in millimeters. Store owners should show the same numbers on the product page, plus the overall frame width.

Measurement	What it is	Why shoppers care
Lens width	Width of one lens	Affects the look and field of view
Bridge width	Gap between the lenses, over the nose	Affects how the frame sits
Temple length	Length of each arm	Affects comfort behind the ears
Frame width	Total width across the front	Compare with face width

These are the standard parts of a frame. Exact ranges differ by brand, so show the real figures for each product.

How can a shopper find their size?

The easiest method is to check a pair they already wear. Ask them to look at the numbers printed on the arm and compare them with the product page.

If they have no pair, they can measure:

1. Hold a ruler across the front of the face at brow level.
2. Note the width from temple to temple.
3. Compare it with the frame width on the product page.

A frame close to the width of the face usually fits well. Tell shoppers to choose by comfort first, since they will wear glasses for hours.

How does face shape fit in?

Face shape is a style guide, not a rule. Common categories include round, oval, square, heart and long faces. People often suggest contrasting shapes, such as angular frames for rounder faces, but taste varies.

Retailers should offer face shape advice as a gentle suggestion. The article on the face shape guide for glasses covers what to show on the page.

Be careful with claims. Describe what tends to look balanced, and avoid saying a shape "can't" wear a style.

What should you put on a glasses product page?

Give shoppers everything they need to judge fit without leaving the page:

• All four measurements. List them in the same order on every product.
• A photo on a face. Show at least one image of the frame worn.
• A size label. If you group frames into small, medium and large, say what those mean.
• Adjustability notes. Mention nose pads and flexible temples where they apply.
• A return note. State how returns work for prescription lenses.

Consistent layout makes comparison easier across many products.

How do you write fit notes for frames?

A short fit note turns the numbers into advice. Examples include "wide fit, suits broader faces" or "narrow bridge, sits higher on the nose". Keep the language neutral and base each note on the measurements.

Also say who the frame is not for, such as "may be tight for wider faces". Honest notes reduce returns, and they build trust with shoppers who cannot visit a shop.

How does live-camera try-on help?

Numbers tell shoppers whether a frame will fit, but not whether they like how it looks. A live-camera try-on shows the frame on their face through the phone or computer camera.

ZeDaq.ai offers live-camera eyewear try-on. The shopper opens the camera on your product page and sees the frames on their own face.

Shoppers who live far from a store benefit most, a point that comes up in helping cross-border shoppers judge fit. Try-on shows an approximate view, so keep the measurements on the page as the fit reference.

How do you add try-on to your store?

On Shopify, install the ZeDaq.ai app from the App Store and switch on its app embed. The steps are in the guide on adding virtual try-on to Shopify. Stores on other platforms can use the script-tag widget, and developers can use the REST API.

The Free plan lets you test first. It includes 3 try-ons, 3 measurements and 5 invoices a month. Paid plans start with Micro at $14 a month, and every paid plan has a 3-day free trial with no card required.

FAQs

Where do I find the numbers on my current glasses?

They are usually printed on the inside of an arm. They may look like three numbers separated by symbols.

Does face shape decide which glasses I should buy?

No. It is a styling guide only. Comfort and personal taste matter more.

Can a frame be adjusted after I buy it?

Some frames have adjustable nose pads or flexible arms, and an optician can adjust many styles. Check the product notes.

Is a live try-on exact?

No. It gives a good idea of the look, but frame measurements remain the best guide to fit.