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Customei turns an ordinary Shopify product into one your customers can personalize before they buy. A shopper types a name, picks a colour, uploads a photo, and watches your product change in front of them. To make that happen you set up three things.

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The three pieces

Design template

Your artwork. A canvas at print size holding text, photos, and graphics.

Option set

The questions you ask the shopper, and what each answer changes on the artwork.

Product

The Shopify product the option set is attached to. This is where it all goes live.
A design template on its own is just a picture. An option set on its own just collects answers. Put them together and attach them to a product, and you have a personalized product your customers can order.
The Customei home page inside Shopify admin, showing the sidebar with Design Templates, Option Sets, Assets, Orders, and Preferences.

The Customei home page. Everything you need sits in the left sidebar.

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A real example

Say you sell a canvas print of two friends, and you want buyers to choose skin tones and add their own names.
1

You draw the canvas once

In a design template you lay out the artwork: the two figures, the wording, and a text layer where a name goes. Every piece sits on its own layer, and every layer has a number such as #14 or #3.
2

You write the questions

In an option set you add the options a shopper fills in: Enter Year, Choose Skin For 1st Woman, Enter 1st Woman’s Name.
3

You link each answer to a layer

You tell Customei that the answer to Enter Year becomes the text on layer #14, and the swatch picked for Choose Skin For 1st Woman swaps the picture on layer #3.
4

You attach it to a product and publish

Pick the Shopify product, hit Publish, and the options appear on that product page.
5

Your customer personalizes and buys

They type 2026, pick a skin tone, and see the canvas update as they go. Their exact choices arrive with the order so you know what to print.

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What else is in the app

You don’t have to start from a blank canvas. When you create an option set, Customei can build the options for you from a design template you already have. See Option sets.

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Where to next

Design templates

Start with the artwork side.

Create a design template

Pick a canvas size and lay out your first design.

Option sets

Add the questions your customers answer.

Assign products and go live

Put it on a product page.