When you present with Google Slides, click the CC button in the lower left corner or press the Ctrl or CMD + Shift + C shortcut to enable closed captioning.
Then keep your laptop close by. As you speak, your mic will pick up what you say.
Your words should appear as closed captioning either at the bottom or above your slide.
Captions and your microphone automatically turn off if there’s no activity on your computer for 30 minutes.
As you can see from the enlarged portion of the toolbar below, you can set the Text Position and Size as well.
Note: This CC button only appears in Google Chrome browser. As of 11/14/2019, it does not yet show up in Chromium-based browsers.
Simple Steps
Step 1: Set up your microphone
Your microphone needs to be on and working in order to use captions with Google Slides.
Step 2: Present with captions
Open your presentation in Google Slides. You must be using the Chrome browser on a Mac or PC.
To start presenting, click Present.
Click CC to turn on captions. You can also use the shortcut Ctrl + Shift + C in Windows or Chrome OS, or the Command key + Shift + C if you’re using a Mac.
Begin speaking. As you speak, captions will appear at the bottom of the screen. Note that captions don’t include punctuation and are not stored.
To turn off captions, click CC.
Parting Thought
Before you begin using closed captions, you might want to let your audience know beforehand. Google recommends asking your audience for their preference before enabling captions. Some people find them more distracting than helpful. It’s also worth noting that captions and your microphone automatically turn off if there’s no activity on your computer for 30 minutes.