# Web performance

### What is web performance?

**Website performance** (or speed score) measures the responsiveness of your website and how quickly it loads.

Web perfomance includes:

* **Loading speed:** Measures how quickly the main content of a website appears. It is equivalent of Largest Contentful Paint.
* **Total blocking time:** Measures how long it takes visitors to fully interact with the website
* **Visual stability:** Measures how much the webpage content moves around while loading
* **Interactivity:** Measures how fast the website responds to user's click

<figure><img src="/files/HkKtbU548iRrHEpOyAfn" alt="Website performance measures the responsiveness of your website and how quickly it loads"><figcaption></figcaption></figure>

### Learn more about web performance

{% content-ref url="/pages/rCM9ywE14x7SRMBswkCz" %}
[Basic Core Web Vitals](/seo-suite-help-center/knowledge-hub/basic-core-web-vitals.md)
{% endcontent-ref %}

{% content-ref url="/pages/eJpZDadb2IcM9JYokxhc" %}
[Web performance and speed with Shopify eCommerce in 2024](/seo-suite-help-center/knowledge-hub/web-performance-and-speed-with-shopify-ecommerce-in-2024.md)
{% endcontent-ref %}

### How web performance is calculated?&#x20;

Currenty, this performance score report is using the PageSpeed Insight API to measure your Home, Product and Collection pages. It varies on each page of your website and on user devices. Select page and devices to check web performance.

{% hint style="info" %}
Shopify recently updates the Shopify Admin Performance report, which leverage real customer loading data. We will soon integrate this report.&#x20;
{% endhint %}

<figure><img src="/files/lR28ffhUsMugkknOXmcn" alt="Web performance score of all page in all devices"><figcaption></figcaption></figure>

### What's considered a good score?

#### Desktop Scores

* 90 or above: Excellent performance
* 75-89: Good performance, but room for improvement
* Below 75: Needs optimization

#### Mobile Scores

* 50-55: Average for Shopify stores
* Above 55: Above average performance
* Below 50: Needs attention

<details>

<summary>Why are mobile scores typically lower?</summary>

It's normal and expected for mobile scores to be lower than desktop scores due to:

1. Hardware limitations
   * Mobile devices have less processing power
   * Cellular networks are typically slower than broadband
2. Technical factors
   * Mobile-specific CSS rules for responsive design
   * Additional viewport considerations
   * Image resizing requirements

</details>


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