Flightradar24 on high resolution monitors



I'm running Windows 10 Pro creator Edition on an Intel X99 platform with 64 Meg of RAM and two (2) EVGA GeForce GTX 980 Ti SC+ GAMING ACX 2.0+ GPUs in SLI. All the drivers are up to date. The monitor is a Dell 4K.

I use the latest version of Chrome, which is the recommended browser from Flightradar 24. However, I find that at resolutions above 1920 x 1080, the app -- which I am aware by their own admission, is in Beta -- goes from barely useable to unusable.

However, if I run it on Microsoft Edge, it is smooth and crisp at 3840 x 2160. I contacted their technical support, and they tell me they have yet to hear of such an issue. Nevertheless, this is the error set that I now get using the latest version of Chrome:

Error constructing CesiumWidget.
Visit http://get.webgl.org to verify that your web browser and hardware support WebGL. Consider trying a different web browser or updating your video drivers. Detailed error information is below:
RuntimeError: The browser supports WebGL, but initialization failed.
    at new t (https://www.flightradar24.com/static/js/cesium/Cesium.js?1499675399:2:20606)
    at new L (https://www.flightradar24.com/static/js/cesium/Cesium.js?1499675399:41:7544)
    at new ve (https://www.flightradar24.com/static/js/cesium/Cesium.js?1499675399:52:11624)
    at new P (https://www.flightradar24.com/static/js/cesium/Cesium.js?1499675399:63:23921)
    at new X (https://www.flightradar24.com/static/js/cesium/Cesium.js?1499675399:66:13108)
    at CesiumCockpit.createViewer (https://www.flightradar24.com/static/js/cockpit_view.js?1499675399:1:3289)
    at HTMLDivElement.<anonymous> (https://www.flightradar24.com/static/js/cockpit_view.js?1499675399:1:304)
    at HTMLDivElement.dispatch (https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js:3:7519)
    at HTMLDivElement.r.handle (https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js:3:5600)

I verified the browser's ability to display the the box at http://get.webgl.org and I am not experiencing any issues whatsoever with any other programs or apps. I suppose I can just use Edge for Flightradar24; but, I hoped that there is a simple fix or oversight on my part that you might be able to help me with.


Hi there,

Unfortunately, I haven’t seen this issue before and I’m not sure what the cause might be. Have you checked everything in our troublshooting guide: http://cesiumjs.org/troubleshooting.html ?

Hopefully another community member can chime in with suggestions.


  • Rachel