Responsive breakpoint checker
See how a website looks on a phone, tablet, laptop and desktop. Enter a URL and switch between screen sizes to spot layout problems before your visitors do.
Some websites do not allow previews inside another page. If the frame stays blank, that site blocks embedding; check it in your browser's device mode instead.
How it works
Why screen sizes matter
Many local searches happen on a phone, and Google indexes the mobile version of your site first. A page that looks fine on a desktop can hide its phone number, squeeze its buttons or scroll sideways on a phone.
Pick a size and the tool loads the page in a frame of that width and height, scaled down to fit your screen if needed. Look for text that is too small, buttons that are hard to tap and content that runs off the edge.
Found problems? See our website audit and web design services.
FAQ
Breakpoint checker FAQ
Why is the preview blank for some sites?
Many websites send a header that blocks them from being shown inside another page, for security. The tool cannot change that. Use your browser's device mode instead: in Chrome, open DevTools and click the device icon.
Which screen sizes should I test?
At least a phone (375 px wide), a tablet (768 px) and a desktop (1440 px). Check that text is readable without zooming, buttons are easy to tap and nothing scrolls sideways.
Does it show exactly what a phone shows?
It shows the page at that width and height in your browser. Real devices can differ in fonts, touch behavior and browser bars, so test important pages on a real phone too.
More free marketing tools
Use them, no signup.
Want a website that works on every screen?
In a free 30-minute strategy session we review your website, search and ads, and leave you with three priorities, whether you hire us or not.
By submitting, you agree to our Terms. Text messages are sent only if you check the SMS box; see our SMS Consent Policy.