Responsive Design Checker for Every Device

No more device-hopping or manual browser resizing – Pixefy puts all your responsive views in one place.

Check Website Responsiven…

https://pixefy.io

360x800

/

100%

Mobile

Your Website

Mobile

1180x820

/

75%

Tablet

Your Website

Tablet

1280x768

/

50%

Laptop

Your Website

Laptop

1440x1024

/

50%

Desktop

Your Website

Desktop

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.

Updates

See What’s Changed

We’re constantly improving Pixefy. Check out the latest features and updates we’ve added

See more in our

v.1.0.8

New

Improvement

Pixefy now includes an SEO Overview panel and Selection Sync, making it easier to review page structure and inspect elements across multiple panes.

Mar 9, 2026

v.1.0.6

New

Improvement

Fix

Pixefy v1.0.6 introduces Dark Mode, Touch Simulation (beta), performance improvements, and smoother pane resizing and syncing.

Mar 4, 2026

v.1.0.5

New

Improvement

Fix

This update makes working with lots of panes much easier: you can now switch to Single Pane, filter panes by device type, and enjoy cleaner controls when zoomed out.

Feb 17, 2026

Updates

See What’s Changed

We’re constantly improving Pixefy. Check out the latest features and updates we’ve added

See more in our

v.1.0.8

New

Improvement

Pixefy now includes an SEO Overview panel and Selection Sync, making it easier to review page structure and inspect elements across multiple panes.

Mar 9, 2026

v.1.0.6

New

Improvement

Fix

Pixefy v1.0.6 introduces Dark Mode, Touch Simulation (beta), performance improvements, and smoother pane resizing and syncing.

Mar 4, 2026

v.1.0.5

New

Improvement

Fix

This update makes working with lots of panes much easier: you can now switch to Single Pane, filter panes by device type, and enjoy cleaner controls when zoomed out.

Feb 17, 2026

Updates

See What’s Changed

We’re constantly improving Pixefy. Check out the latest features and updates we’ve added

See more in our

FAQ

Frequently Asked Questions

We’ve gathered answers to some of the most commonly asked questions

Where can I request new features?

You can request features or report bugs directly through the extension. Additionally, you can do the same on our Google Chrome support page or by filling out this form to submit your requests or bug reports.

Can the extension be used on all websites?

Due to security restrictions from Google's Manifest V3, some websites may not be accessible with the extension. However, the majority of sites are.

FAQ

Frequently Asked Questions

We’ve gathered answers to some of the most commonly asked questions

Where can I request new features?

You can request features or report bugs directly through the extension. Additionally, you can do the same on our Google Chrome support page or by filling out this form to submit your requests or bug reports.

Can the extension be used on all websites?

Due to security restrictions from Google's Manifest V3, some websites may not be accessible with the extension. However, the majority of sites are.

FAQ

Frequently Asked Questions

We’ve gathered answers to some of the most commonly asked questions

Where can I request new features?

You can request features or report bugs directly through the extension. Additionally, you can do the same on our Google Chrome support page or by filling out this form to submit your requests or bug reports.

Can the extension be used on all websites?

Due to security restrictions from Google's Manifest V3, some websites may not be accessible with the extension. However, the majority of sites are.

Pixefy on the Chrome Web Store

Available in the

Pixefy on Firefox Add-ons

Available in the

Pixefy  - Review websites across every screen | Product Hunt