Custom Screen Resolutions

On iOS and Android viewer, custom screen resolutions available on settings are only those not bigger than the device’s native screen resolution. This is due to the black screen problem observed when switching to higher resolution. On Windows and HTML5 viewer’s Settings → Resolutions… → Other/Custom Screen Resolutions, supported resolutions is up to 4096×2160.


Performance in HTML5 VIEWER

HTML5 VIEWER is much slower than native viewer apps on Android, iOS and Windows. 
This is due to technical limitation of HTML5/Javascript.


Slow screen update on Windows VIEWER.

There are some cases that the rendering of screen update in Windows VIEWER is very slow. 
One of the possible reason is that Windows client machine only has a DirectX 9 graphics driver. 
It is recommended to upgrade to DirectX 10 – above graphics driver to achieve better performance.


Multiple Display

For Windows 10/11 primary machine, spacedesk supports simultaneous connection of up to sixteen additional displays.

– Up to sixteen Android, or iOS, or Windows VIEWERs

– One HTML5 VIEWER web browser application for any device and operating system e.g. Mac OS X and Linux

For Windows 8.1 primary machine, spacedesk supports simultaneous connection of up to three additional displays only.


HTML5 VIEWER on Mozilla Firefox is not supported.

spacedesk’s HTML5 VIEWER is currently not supported in Mozilla Firefox web browsers due to performance limitations. 
Please use other web browsers recommended in system requirements chapter.