• Test your responsive design OnDevice

  • An accurate tool for testing responsive design on multiple devices simultaneously

  • Create test account
  • * You create a test account with 5 devices to test on. For this account, we do not request personal or credit card information upfront. You can upgrade later to get the full device collection for 45 GBP (+VAT) /month. Comodo secure

Testing responsive design online with real device size
  • Comparable devices by OnDevice responsive testing

    Comparable devices

    All devices are displayed in one horizontal viewport where you can compare them, easily find the inconsistencies and have an overview of how your responsive design looks across multiple devices.

  • Real device image by OnDevice responsive testing

    Real device preview

    The responsive test results are displayed with real device images around them to view what the client sees during a review and thus minimises the number of correction iterations and change requests.

  • Real device size by OnDevice responsive testing

    Physical device sizes

    The display of the responsive testing is based on real device sizes, to see how certain resolutions look in real life and to check whether you set your break points correctly.

  • Predefined device list by OnDevice responsive testing

    Predefined devices list

    The device list of the responsive tester ranges from the smart phone to the HD monitor and they all have their brand, resolution and market share displayed so you know which resolution belongs to which device and how important it is to test on that device.

  • Custom preferences by OnDevice responsive testing

    Accurate displays

    The device pixel ratio and the inconsistency between browsers, including or excluding the scrollbar in the media query widths, are incorporated so they will not modify the responsive test results compared to real devices.

  • Presentation mode by OnDevice responsive testing

    Presentation mode

    By turning off the designer toolbar, you get a sleek, clean interface on which you can present your responsive design to stakeholders without taking painstaking screenshots.

Testing responsive design online with real device size
OnDevice create test account

OnDevice is a quick and accurate responsive design tester tool built for web/UI designers and front-end developers. The heart of OnDevice is to display multiple devices in one viewport, making the result scanable and the devices comparable.

Create test account

* You create a test account with 5 devices to test on. For this account, we do not request personal or credit card information upfront. You can upgrade later to get the full device collection for 45 GBP (+VAT) /month. Comodo secure

  • Very useful for me. I used it for almost a month and I'm amazed about how much faster it is to set the layout for a new page with this tester.

    Laszlo85
    London
  • Seeing the final look of my design in the way that it would actually look on real devices is a great help for me. Also, it makes it a lot easier to show my ideas and progress of work.

    JannisBar
    Nicosia
  • Much faster than resizing the browser window for every resolution I have to check. I very much like the double scrollbar for navigating within the viewport.

    ElenaS1
    Budapest
  • Device list OnDevice responsive design tester
    50 devices

    The current device list contains 50 different types of devices ready for responsive testing, such as smart phones, tablets, laptops and monitors. This number is growing steadily, based on user requests.

  • Infinite testing OnDevice responsive design tester
    Infinite testing

    There is no restriction whatsoever on the number of responsive design tests you can run on your account. There is also no restriction on the length of the test run. You are free to use it day and night, 24/7.

  • Device scaling OnDevice responsive design tester
    5 scaling

    There are several different scaling options to refine the viewport and make your preferred devices easily scanable for the next responsive testing. Whichever you choose, the devices will keep their real-life proportion to each other.

OnDevice start with a test account

What makes OnDevice an effective and thoughtful responsive testing tool is the approach to display the test results by real device sizes. That gives the closest optimal picture of what the client sees on its devices; thus, significantly decreasing the number of correction iterations.

Start with a test account

* You create a test account with 5 devices to test on. For this account, we do not request personal or credit card information upfront. You can upgrade later to get the full device collection for 45 GBP (+VAT) /month. Comodo secure

Test responsive design on multiple devices
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