An AI size chart that answers each shopper's size question.
Genlook reads the size chart your store already has. Shoppers give their height, measurements or usual size, and get the size your chart points to, with the reason, right on the product page.
- Uses your own size chart
- Talks about size only
- Under your store's name

Which size should I take?
I'll check the Maison Rue size chart for this blazer. A few details first:
Size M. Your chest is 90 cm and the chart puts M at 88 to 92 cm. If you want room for a thick knit underneath, take L.
Maison Rue uses AI and can make mistakes.
- Uses your own size chart
- Talks about size only
- Under your store's name
Size is the question shoppers ask most
Most product pages already link to a size chart. Shoppers still have to find it, measure themselves and work out which row is theirs, usually on a phone. In our shopping assistant pilot, size was the question shoppers typed most.
Read about bracketing →The chart sits behind a link
Few shoppers open it, and fewer read it to the end.
A table can't ask a question back
A chart lists every size for every measurement. It can't ask the one thing it needs, or tell a shopper which row is theirs.
Shoppers order two sizes and return one
This is called bracketing. The shopper tries both at home and sends one back, and the return usually costs you.
Your chart, read for one shopper at a time
The size chart stays yours. The assistant reads it, asks for what it needs, and tells the shopper which row is theirs.
- 1
It reads your size chart
From the size chart app you already use, your size guide page, or a chart published as an image. You don't rebuild anything.
- 2
It asks only what the garment needs
Height and chest for a blazer, waist and inseam for jeans, or the size they usually wear. Any field can be left blank.
- 3
It replies with one size and why
The reply names the size your chart points to and the measurement that decided it. Between two sizes, it says so.
Maison Rue size chart
Wool blazer · read from your size chart app
Size M
Their chest is 90 cm, inside the 88 to 92 cm range of M.
It talks about size, and only size
The AI size chart is built to answer one question well. It doesn't sell, suggest other products or drift into other topics.
- No product suggestionsIt never recommends other products. If a shopper asks about something else, it says it can only help with size.
- No invented sizesWhen a product has no size chart, it says so. It doesn't guess, or convert from another brand's sizes.
- Honest between two sizesWhen the shopper sits between two rows, it says how each size will feel and lets them choose.
- Remembers the shopper's answersSaved on the shopper's own device, so the next product starts filled in. They confirm, never retype.
- In the shopper's languageIt replies in the language the shopper writes in, in centimetres or inches.
What shoes would go with it?
I can only help with sizing here. For this blazer, tell me your height and chest and I'll check the size chart.
Try-on shows the look. Your chart gives the size
Virtual try-on answers whether a piece suits the shopper. The size chart answers which size to order. Both live in the same Genlook window, so the shopper goes from one to the other without leaving the product page.
See virtual try-on →

Two assistants, in the same window as try-on
Both open inside the Genlook window on your product pages, under your store's name. Pick the size chart if size is the only question you want answered, and the shopping assistant if you want it to sell too.
Answers size questions, and only those.
- Reads the size chart you already have
- Asks only what each garment needs
- Replies with one size and the reason
- Remembers answers on the shopper's device
- No product recommendations
- No outfits or store questions
Everything the size chart does, plus:
- Answers about fabric, colours and stock
- Answers shipping and returns questions
- Finds products for a precise need
- Builds outfits from your catalog
- Try-on of one piece or a full set
- Every conversation in your dashboard
Put your store in the first batch
Leave your email and your store URL. We will check how the assistant reads the size charts on your store and tell you which batch you are in.
We open stores in batches. Send your store URL and we will check how your size charts read.
Also called a size guide or fit finder
Merchants look for this kind of tool as a size chart app, size guide, fit finder or size recommendation software. If you don't have a chart yet, our free size chart generator builds one in a minute.
What is a size chart? →- Size chart app
- Size guide
- Fit finder
- Size recommendation
- Size chart chatbot
Questions about the AI size chart
Something else? Email hello@genlook.app or book a call with us.
Book a demo →When does it launch?
Do I need a size chart already?
Does it guarantee the fit?
Will it recommend other products?
Do I need Genlook virtual try-on?
Which platforms will it support?
What happens to the shopper's measurements?
Join the AI size chart waiting list.
Send your store URL. We will check how your size charts read and tell you when your batch opens.


