A simple guide to connecting your Chromebook to your classroom projector.

If you’re a teacher with a Chromebook chances are you’ll want to connect it to your classroom projector or display screen. Luckily most Chromebooks come with a built in HDMI port which allows you to use a wire to output your Chromebook’s screen to an external display.

What you need:

Connecting your Chromebook to your projector

First find the HDMI port on your Chromebook. It will look something like this:


Now find the same port on your projector and connect the two with the HDMI cable. If you’re using a classroom projector your projector’s sockets will likely be wall mounted.

If your projector doesn’t have an HDMI port — most new projectors will — you’ll need to use a converter.

Chromebook VGA Adapter

Mirroring your Chromebook’s screen to a projector

When you first connect your Chromebook to your projector it will display in extended mode. This means the projector will show an additional desktop rather than the same one you’re viewing on your Chromebook. In this mode you can drag a window to the right and slide it on to the extended display.

Most teachers, however, use mirrored mode, which shows a mirror image of whatever is on your Chromebook’s screen. To enable mirrored mode do the following:

  • Hold Ctrl and press chromeos_full_screen on the keyboard.

This will now mirror your Chromebook’s screen to the projector.

Note: If your projector and Chromebook do not share a common resolution you may notice that your screen shrinks or displays black borders. This is normal.

To access more display settings enter the following in a browser window:

  • chrome://settings/display

About Author

Profile photo of Karl Rivers

Karl is an award winning Director of IT for the Royal Grammar School Guildford, based near London, England. He has been working in education for more than ten years and founded ClassThink in 2013 to share technology best practice with other schools. In 2014 he won the NAACE Impact Award for support services in schools, and writes edtech articles for Education Executive Magazine.


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