Screen Resolution Simulator
Test your website on different devices and screen resolutions instantly.
Preview Your Site at Any Screen Size
Enter any URL and this free simulator loads the page in a frame sized to the device you pick — iPhone, iPad, laptop, desktop — so you can spot layout problems without owning every device.
One-click presets cover the most common viewports, and a rotate button flips portrait to landscape instantly. Everything renders in your browser in real time.
One-click device presets
iPhone 14 Pro, iPad Air, laptop, and desktop sizes load instantly — no manual width and height entry needed.
Rotate and custom sizes
Flip any preset between portrait and landscape, or type custom dimensions for unusual screens.
Free and local
The simulator frames pages in your browser using their public URLs — nothing is uploaded or stored anywhere.
How to use
- Enter the URL of the site to preview.
- Click Load to render it in the simulator.
- Pick a device preset and rotate to test both orientations.
Frequently Asked Questions
What does the resolution simulator do?
It loads a webpage inside a resizable frame so you can see how it lays out at common phone, tablet, laptop, and desktop screen sizes.
Can it simulate any custom size?
Yes. Besides the device presets you can enter any width and height manually.
Does it replace real device testing?
No. It is a quick layout check — always test on real devices before launch for touch, performance, and rendering quirks.
Are the sites I preview uploaded?
No. Pages are loaded directly in your browser frame — nothing is sent to our servers.
Is the simulator free?
Yes, free with no signup.
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