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

# Customize Product: Product Personalization Events

> Track product customization events in your Shopify store. Measure how often customers personalize or configure products before purchase.

<Tip>
  Customize Product measures the total number of times customers personalized or configured a product, such as selecting custom options, engravings, or build-your-own configurations.
</Tip>

## Formula

<Info>
  **Customize Product** = **COUNT** ( customize\_product events )
</Info>

### Formula Components

| Metric                        | Definition                                                           |
| ----------------------------- | -------------------------------------------------------------------- |
| **customize\_product events** | Individual product customization events tracked by the Upstack pixel |

|| Metadata | |
||---|---|
|| **Type** | Number |
|| **Data Source** | [Upstack Pixel](/pixel) |
|| **Aggregation** | Count |

***

## Example

Your store offers product personalization on 500 items. In January, you tracked **3,847 customize product events** across all channels.

| Channel        | Customize Events | % of Total |
| -------------- | ---------------- | ---------- |
| Paid Social    | 1,539            | 40%        |
| Organic Search | 962              | 25%        |
| Direct         | 770              | 20%        |
| Email          | 576              | 15%        |

***

## How It Works

The Upstack pixel fires a customize product event when a customer interacts with product customization features on your Shopify store. This includes selecting personalization options, configuring custom product builds, adding engravings, or choosing non-default product variants that require additional user input. Each customization interaction counts as one event.

***

## When to Use

| Scenario                                     | Action                                                          |
| -------------------------------------------- | --------------------------------------------------------------- |
| Measuring personalization feature engagement | Track how often customers use custom product options            |
| Comparing customization across product lines | Identify which products drive the most personalization interest |
| Evaluating customization conversion impact   | Correlate customize events with purchase rates                  |
| Optimizing product configuration UX          | Monitor customization drop-off to identify friction points      |

***

## Related Metrics

| Metric                                                              | Relationship                                    |
| ------------------------------------------------------------------- | ----------------------------------------------- |
| [View Contents](/reference/metrics/funnel/engagement/view-contents) | Customize events occur after product page views |
| [Add to Carts](/reference/metrics/funnel/engagement/add-to-carts)   | Customized products often proceed to cart       |
| [Purchases](/reference/metrics/funnel/conversions/purchases)        | Track how customizations convert to sales       |

[See all Engagement metrics →](/reference/metrics/funnel/engagement)