> ## 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.

# Add to Wishlist: Track Product Interest

> Track Add to Wishlist events to measure product interest and intent. Identify popular products and optimize retargeting for your Shopify store.

<Tip>
  Add to Wishlist counts the number of times visitors save products to their wishlist, indicating purchase intent and product interest.
</Tip>

## Formula

<Info>
  **Add to Wishlist** = **COUNT** ( add\_to\_wishlist events )
</Info>

### Formula Components

| Metric                       | Definition                                                              |
| ---------------------------- | ----------------------------------------------------------------------- |
| **add\_to\_wishlist events** | Individual events fired when a visitor adds a product to their wishlist |

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

***

## Example

Your store's summer collection page shows **847 wishlist adds** over the past 30 days across 12 products.

| Product              | Wishlist Adds | Add-to-Cart Rate |
| -------------------- | ------------- | ---------------- |
| Coastal Linen Dress  | 234           | 42%              |
| Sunset Beach Tote    | 189           | 38%              |
| Ocean Breeze Sandals | 156           | 35%              |

***

## How It Works

The Upstack Pixel fires an `add_to_wishlist` event whenever a visitor clicks a "Add to Wishlist" or "Save for Later" button. Each event captures the product details including SKU, price, and category, enabling you to analyze which products generate the most interest before purchase.

***

## When to Use

| Scenario                        | Action                                                                  |
| ------------------------------- | ----------------------------------------------------------------------- |
| Identify high-interest products | Track which items get wishlisted most to inform inventory and marketing |
| Retarget interested visitors    | Build audiences of wishlist users for reminder campaigns                |
| Measure product page engagement | Compare wishlist adds vs. add-to-cart to gauge consideration behavior   |
| Analyze seasonal trends         | Track wishlist activity around promotions and product launches          |

***

## Related Metrics

| Metric        | Relationship                                                      |
| ------------- | ----------------------------------------------------------------- |
| Add to Cart   | Measures stronger purchase intent when visitors add items to cart |
| Product Views | Tracks initial product interest before wishlist or cart action    |
| Conversions   | Measures completed purchases from wishlist retargeting            |

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