Mobile simulator - responsive testing tool
Smartphone and tablet simulator on computer with several models to test mobile responsive websites.
Test the responsiveness of any website directly in your browser. Check mobile compatibility in seconds.
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This Chrome extension allows web designers, developers, and site owners to quickly test the responsiveness of any website directly in their browser. It analyzes responsive design elements and provides an instant score with practical suggestions for improvement.
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Smartphone and tablet simulator on computer with several models to test mobile responsive websites.
Preview and debug your website’s responsiveness across multiple devices in real-time, all inside one browser tab.
Test your responsive designs on multiple devices at once.
Lets you quickly switch the browser locale to test localization on your website.
Check Core Web Vitals and compare metrics for desktop and mobile devices. Check pagespeed insights using our Chrome extension.
One-click website page speed test — instantly view page load time details and understand overall website performance.