Not sure if it was already posted here, but here is a very useful and safe to use trick for users with very limited storage PC's. Like ones with embedded 32 GB eMMC storage. Using this method, you'll be reclaiming around 2 GB, but the amount of space will vary per installation. Although this method won't noticeable affect performance, you should only consider this option on a device with limited storage or when you don't have another choice. Just tested by myself - everything working as described.
Reduce Windows 10 footprint using Compact OS
Compact OS is a tool introduced with Windows 10 that allows you to compress the installation files and built-in desktop applications reducing the footprint and freeing up space.
Warning: This is a friendly reminder that you'll be modifying system files, and while it's safe to use the tool, bad things can always happen. It's recommended to make a full backup of your PC before proceeding.
1) Open Start.
2) Search for Command Prompt, right-click the result, and select Run as administrator.
3) Type the following command to compress the Windows 10 and applications and press Enter:
Compact.exe /CompactOS:always
After completing the steps, Compact OS will begin the process, which can take anywhere between 10 to 20 minutes, and the best part is that you don't even need to restart your device.
At any time, you can revert the changes using the same instructions, but on step No. 3, use this command
Compact.exe /CompactOS:never
and press Enter.