How to Make Captions and Subtitles Bigger on YouTube

July 12, 2022 BY REBECCA KLEIN
Updated: September 5, 2023

Automate Your YouTube Captioning [Learn About the Integration]

This multi-part blog series will highlight three valuable accessibility features for YouTube captions and subtitles. In our first blog of the series, we’ll discuss how to make captions and subtitles bigger on YouTube.

How to Make Captions and Subtitles Bigger on YouTube

Did you know you can customize how captions and subtitles appear on YouTube? The ability to adjust caption size is essential to video accessibility, as not everyone prefers reading the same size text.

Making captions bigger or smaller on YouTube is easy. At the bottom right of your video player, click Settings, Subtitles/CC, and then Options. From here, you can customize:

  • Font, color, opacity, and size
  • Background color and opacity
  • Window color and opacity
  • Character edge style

Options for customizing captions and subtitles on YouTube, including font, color, opacity, and size; background color and opacity; window color and opacity; and character edge style


Additionally, you can use keyboard shortcuts to adjust caption size. Keyboard shortcuts give access to people who can’t rely on a mouse, including people who are blind or have low vision and people with motor disabilities.

Using your C key, you can turn captions on or off.  To increase the size of the captions, use the + (plus) key. To decrease the size of the captions, use the – (minus) key.

Please note that these tools will only work when a video owner has made captions available through YouTube’s auto-captions or their own caption files.

YouTube. 3Play Media. Learn about the captioning integration.

3Play Media logo

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