UI Scaler is a Foundry VTT module that allows you to increase or decrease the size of the user interface elements (left sidebar, navigation bar, and macro bar).
UI Scaler can be installed using the Foundry module installer. Alternatively, you can install it using the following manifest URL...
https://github.com/cs96and/FoundryVTT-uiscaler/releases/latest/download/module.json
If you find this module useful and would like to offer your support, why not buy me a coffee (or a beer)?