Viewport Tester
mobile
393 × 852
mobile
360 × 780
mobile
412 × 915
tablet
820 × 1180
tablet
744 × 1133
tablet
912 × 1368
desktop
1366 × 768
desktop
1920 × 1080
About the Responsive Tester
The Responsive Tester shows how a web page looks on common phone, tablet and desktop screen sizes, so you can spot layout problems before your visitors do. It is useful for web designers, developers and site owners checking a new page or theme.
Responsive Tester FAQ
How do I test if my website is mobile friendly?
Enter your page address, then switch between the phone, tablet and desktop views. Look for text that is cut off, buttons that are too small, or content that scrolls sideways.
Which screen sizes does it show?
It previews typical device widths such as small phones (about 375px), tablets (about 768px) and laptops or desktops (1280px and wider).
Why does a site not load in the preview?
Some websites block being shown inside other pages for security reasons. In that case, open the site directly on your device or use your browser's built-in device mode.