Responsive Design Checker for Every Device
No more device-hopping or manual browser resizing – Pixefy puts all your responsive views in one place.
It's free to use!

Check Website Responsiven…
https://pixefy.io
Instantly see how your website looks on mobile, tablet, laptop, and desktop at the same time
All-in-one responsive web design tester that lets you quickly fine-tune layouts with synchronized interactions
View every screen size in a single tab
Pixefy displays multiple device views simultaneously in one browser window so you don’t have to constantly switch devices or resize your browser. Spot layout issues at a glance and ensure a consistent design on every screen
Split-screen comparisons
Compare mobile and desktop views side by side without switching windows. Instantly catch discrepancies between layouts
Synchronized interactions
Scroll or click in one view, and all other device views will mirror the action. This synchronized testing simplifies testing navigation and interactive elements in parallel
300+ Device Presets & Custom Viewports
Guarantee your site looks perfect on any device. Pixefy comes loaded with 300+ built-in device profiles, covering popular phones, tablets, laptops, and desktops. Instantly preview your design on iPhones, Android devices, iPads, and more using pre-defined screen dimensions. Have a unique size in mind? Create your own custom viewport or device preset and save it for future testing. You can even simulate different browsers and OS environments with ease.
Extensive device library
Choose from over 300 device presets to test on common screen resolutions and aspect ratios. No manual setup – just pick a device profile and go.
Custom breakpoints
Define and save custom device sizes or breakpoints for specialized testing needs. Tailor the tool to your project’s unique responsive requirements.
User agent simulation
Simulate 100+ different browsers and operating systems via preset user agent strings. Ensure your responsive website behaves correctly on each browser/OS combination, just as it would on real devices.
Customizable Workspace & Advanced Controls
Set your testing workspace to fit your workflow. Pixefy’s flexible interface lets you rearrange and configure your device preview panels however you like. Stack views vertically, arrange them side by side, or any layout you prefer. You can also fine-tune how your previews appear and interact
Flexible Layout
Drag and resize device panels to organize your workspace. View multiple screens in a column or row, and switch between vertical or horizontal layouts on the fly.
Scrollbar toggle
Show or hide scrollbars in the device previews with a click. This helps you accurately inspect full-width sections and identify any overflow or scrolling issues in your design.
Global zoom control
Zoom in or out on all device views at once (or adjust each one independently) for pixel-perfect inspection. Whether you need a closer look at mobile details or to see the entire layout scaled down, Pixefy gives you precise control.
Why Responsive Design Matters
A responsive website isn’t just a nice-to-have – it’s essential for success in today’s multi-device world. Here’s why making sure your site is mobile-friendly should be a top priority
🚀 Faster debugging
Using an all-in-one responsive checker helps you spot and fix layout problems faster, so you can iterate quickly and save development time
✓✓ Consistent user experience
Your visitors deserve a smooth experience on any device. A responsive design ensures users can navigate and read content easily whether they’re on a phone, tablet, or desktop
🆙 Better search rankings
Google’s algorithm favors mobile-friendly sites, and a lack of mobile optimization can result in lower rankings. In short, a fully responsive website can improve your SEO and help more people discover your site.

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Available in the