# SEO Responsive Design & Core Web Vitals Check

**Use case:** 

Evaluate how responsive design impacts critical Core Web Vitals like Cumulative Layout Shift (CLS) on various devices, a crucial factor for Google rankings. Opt

## Input

```json
{
  "urls": [
    {
      "url": "https://www.shopify.com/enterprise"
    },
    {
      "url": "https://www.wix.com/website/builder"
    },
    {
      "url": "https://wordpress.com/create/"
    }
  ]
}
```

## Output

```json
{
  "url": {
    "label": "Website URL",
    "format": "link"
  },
  "tested_at": {
    "label": "Tested At",
    "format": "datetime"
  },
  "summary": {
    "label": "Test Summary",
    "format": "object"
  }
}
```

## About this Actor

This example demonstrates how to use [Responsive Website Checker](https://apify.com/crawlerbros/responsive-website-checker) with a specific input configuration. Visit the [Actor detail page](https://apify.com/crawlerbros/responsive-website-checker) to learn more, explore other use cases, and run it yourself.