Best Responsive Website Checker

Build, Test & Debug mobile websites.

Best Responsive Checker For Free

  • View Port Testing On Local Machine
  • Responsive Behaviour Checker
  • Side by Side View Port Comparison

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  • Test on latest desktop and mobile browsers
  • Geolocation Testing anytime anywhere
  • Automated Web Testing
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Device 1

Device 2

iphone 12 pro(1170x2532)

...

Google Pixel (1080 x 1920)

Google Pixel

Why my website refused to connect? : Your website may not be supporting iframe. Don't worry LT Browser has it covered. Download and install LT Browser to enjoy un-interrupted responsive testing for FREE!!

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Responsive Checker With Multiple Devices

LT Browser 2.0, a free-to-use responsive checker, accelerates your responsive web development by allowing you to interact and test with up to six devices simultaneously.

Interact and Test

LT Browser is now Chromium-based

The all-new Chromium-based LT Browser 2.0

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Check Mobile View Of Your Website

Check the responsiveness of your website across different pre-installed mobile device viewports or custom mobile resolutions. LT Browser 2.0, a responsive checker developer browser, offers a mobile view website for Android and iOS device viewports to help you ensure a seamless user experience.

Check Mobile View

More Reasons To Use LT Browser 2.0

Test with unlimited custom device viewports
Debug on the go with unlimited tabs option
Lifetime FREE access. No login required

Dedicated DevTools for Different Viewports

Now fasten your debugging process with multiple dev tools with this responsive website checker. LT Browser 2.0 offers you separate dev tools for every device while debugging them simultaneously.

Dedicated DevTools for Different Viewports
Hot Reloading Support

Hot Reloading Support

To help you see the changes in real-time, LT Browser 2.0 also offers hot reloading. The local URL automatically reloads in the device viewports whenever you hit save in your react code in your code editor or IDE. Like your regular Chrome browser, you can use navigation arrows, refresh the web page, and more.

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Boost your Productivity and Quality of Work with

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Generate Bug Reports

Generate multiple bug reports with multiple options and share them using your favorite team management tool to resolve them faster.

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Chromium Engine

Leverage Chrome features such as extension support, better OS integration, and more directly on the LT Browser 2.0.

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Network Simulation

LT Browser's built-in speed test allows you to check if your mobile-friendly website works on slow 3G to 5G networks.

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Google Lighthouse Report

You can see how your website ranks for accessibility, SEO and other important metrics in one report.

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Multiple Recording Options

Now debug and deliver responsive websites by recording your entire screen or a particular tab on any device viewport.



FAQs

What is responsive testing?
Responsive testing is testing of the UI/UX of a website on different viewports. Mobile, Tablets and PCs of different brands and OS have different resolutions, shapes and sizes. A responsive website or web app adapts to all those shapes, sizes and resolutions to give the best user experience.
Why is responsive testing important?
Testing responsiveness of the website ensures the best user experience, SEO performance and Least possible bounce rate.
How to test responsiveness of my website/webapp?
You can use LT Browser for responsive testing. It will help you check your website on 50+ viewports across Mobiles, Tablets and PCs of all Major OS. In Fact you can create your own custom viewports, and debug your website on those viewports.
What are the popular devices I should check for responsiveness?
It depends on the devices used by your website visitors. Broadly we can consider as follows
Mobile- Iphones, Samsung Galaxy series, OnePlus phones of past 2 to 3 years.
Tablets- Ipads and Samsung Tablets launched in past 3 to 4 years
PCs- Laptops from Lenovo, Dell, Apple for past 5 years
What does a fully responsive website mean?
A fully responsive website will reshape and resize itself to preserve the best user experience and look and feel across all devices without any need of Scrolling, Zooming and Resizing.
How to measure the success of the responsiveness test for my website?
Once the website renders as it is required to render across all the view ports, and if the user is getting best user experience we can consider it a successful responsive test.
What is the difference between responsive and adaptive design?
Responsive website is fluidic enough to adapt to any shape or size of the viewing device. Adaptive website first detect a predefined resolution and shows pre decided static elements of the website. Fun Fact: Google ranks mobile friendly websites higher compared to any other form of website.
How to check if a site is responsive?
For testing the responsiveness of a locally hosted website, use the Toggle device toolbar option available in the developer tools of the browser. To do this, press F12 to start developer tools in Chrome and Firefox and select the Toggle device toolbar from the menu.
What is responsive testing in mobile?
Mobile Responsive Testing is a process that ensures that your website or an app is working appropriately on all types of devices. Whether it's an app or website, they must ensure they are accessible from any device, anytime and anywhere.