> ## Documentation Index
> Fetch the complete documentation index at: https://help.wtpbiz.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Integration

> Add the Neon Sign Builder to your Shopify theme so customers can design neon signs on your product pages.

## Enable the Theme App Extension

WTPBiz Neon Designer uses a Shopify theme app extension to show the Neon Sign Builder on your product pages. No code required.

1. In your Shopify admin, go to **Online Store > Themes**.
2. Click **Customize** on your active theme.
3. Open the **product page template** used by your neon products.
4. Click **Add block** or **Add section** and search for **Neon Sign Builder** (WTPBiz Neon Designer). Select and add it.
5. Position the block where you want the builder to appear.
6. Click **Save**.

<Note>
  You can also open this step from the [Dashboard](/neon/dashboard) by clicking **Enable theme app extension** in the setup checklist.
</Note>

## Verify the Integration

After saving, visit a neon product page on your store and confirm the builder is visible. If it does not appear, check that:

* The correct product page template is selected in the theme editor.
* The product is added under [Rules & Products](/neon/rules-products#products) with a rule assigned.
* The Neon Sign Builder block is saved on the product template.