# Assets optimization

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**Who can use this feature?**

* This feature is available for Pro and Enterprise plan users
  {% endhint %}

### What is asset?

Asset files in theme the individual files that make up a shop's theme. 

You can find assets file in the Online store -> Theme -> Edit code -> Find "Assets"

<figure><img src="/files/IfiAB5u42eGAF0qtMJpY" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/RHfiDzD8dN33EF6tmxTa" alt=""><figcaption></figcaption></figure>

A theme's assets include its templates, images, stylesheets, and extra snippets of code. They are arranged among the theme's directories, such as **layout**, **templates**, and **assets**.

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Learn more about [Asset with Shopify](https://shopify.dev/docs/api/admin-rest/2024-04/resources/asset).
{% endhint %}

### How does Assets optimization help?

We help optimize all images in assets file.

Images in assets:

* are typically files uploaded to the [**Files**](https://help.shopify.com/en/manual/shopify-admin/productivity-tools/file-uploads?utm_source=sidekick) section in your Shopify admin
* might not be in product, collections and blog posts pages

1. In "Speed up customization" -> Assets optimization
2. Turn on the Asset image optimization
3. Click **Save**
4. After speeding up with customized mode, you'll see details of the assets optimization.

<figure><img src="/files/MLVyWiJ9SSfznlIrFEco" alt=""><figcaption></figcaption></figure>


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