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You can add Frosting to your store without changing what your customers see. A new theme arrives unpublished: you can edit and preview it while your current theme stays live.

Upload the theme file

1

Open your themes

In your Shopify admin, go to Online Store → Themes.
The Themes page in the Shopify admin

Online Store → Themes in the Shopify admin

2

Upload the ZIP file

Under Draft themes, click Import → Upload zip file, choose the Frosting ZIP file you received, and click Upload file. Do not unzip it first.
The Upload zip file option

Import → Upload zip file

3

Wait for it to finish

Frosting appears in your theme library with an Unpublished label when the upload is done. It usually takes under a minute.
4

Preview and customize

Click Customize to open the theme editor, or ⋯ → Preview to see it as a customer would. Nothing changes on your live store until you publish.
5

Publish when you are ready

Click ⋯ → Publish in the theme library. Your previous theme stays in the library, so you can switch back at any time.
Before publishing, preview on your phone as well as your computer, try adding a product to the cart, and check your delivery settings in the cart.

Want the demo store look?

The demo uses sample products, photos and pages. A fresh install starts with placeholders, so your own products show from the start. To recreate the demo for practice or a preview store, see Demo content.