Make YouTube's font size smaller or larger on your screen by changing the font settings for your device.
- Learn more about changing the font size of video captions.
Change YouTube's font size by changing your device's font size.
Note: These instructions are for devices running Android 7.0 and up.
- Open your device's Settings app .
- Tap Display.
- Tap Advanced .
- Tap Font size.
- Choose your font size with the slider.