Below are the steps to increase the size of Project explorer in PyCharm.
Go to Preferences of PyCharm.
Go to Appearance & Behavior >> Appearance.
Check the Use custom font checkbox and increase the size value to increase the font size of the Project explorer.
![](https://studyraft.com/wp-content/uploads/2022/10/image-1024x808.png)
Save the settings modal and restart the PyCharm editor. The font size of the Project explorer will be increased.