Responsive Design Checker
Enter a URL to preview it at Android, iPhone, tablet and laptop sizes side by side. Scroll inside each frame to spot broken layouts, tiny text and sideways scrolling.
How to test a responsive design
- Enter your page URL and wait for the frames to load.
- Scroll inside each frame to check the whole page.
- Note anything broken: overlapping text, cut-off images, tiny buttons or sideways scrolling.
- Confirm on a real phone, which is always the final test.
Common screen widths
| Device | Width in CSS pixels |
|---|---|
| Small Android phones | 360 |
| Most iPhones | 375 to 430 |
| Tablets | 768 to 1024 |
| Laptops | 1280 to 1536 |
Using Chrome DevTools
For deeper testing, open your page in Chrome, press F12 and click the device toolbar icon. You can pick devices, throttle the network to slow 4G and rotate the screen. In Elementor, use the responsive mode switcher to fix tablet and mobile settings separately.
Related tools
Go through the mobile-friendly checklist, check speed with the Core Web Vitals checker, and size images with the image resizer.
More free tools and guides
Practise tools like this on real projects in our digital marketing course in Faridabad, with weekday, weekend and online batches.
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Frequently Asked Questions
Is this responsive design checker free?
Yes. It is free with no sign-up and works in your browser.
Why is a frame blank?
The website probably blocks framing with security headers. Test it on a phone or in Chrome DevTools instead.
Is this the same as a real phone?
It shows the layout at that width, but real devices also differ in fonts, touch and speed. Always do a final check on a phone.
What does responsive design mean?
A layout that adapts to any screen size, so content is easy to read and use on phones, tablets and desktops.