Textures usually take up 90% size of the project.
I've taken steps to help you optimize your game files size.

I've already included the option to display file sizes for each element, and now I've developed a tool in which you can very quickly downsize your material textures.

You can save hundreds of Megabytes thanks to it

Here's how it works:

Select how much to Downsize Material Textures,
You can downsize Base0 (Color) vs Base1 (NormalMap) independently.

Sometimes you may not need Normal Map to be as big as Color Map, so you can downsize the Normal Map more.

When you select how much to downsize, the Editor will cycle through displaying the original version, vs the downsized version, allowing you to quickly decide if the reduction in size does not make the material look too blurry.

   

Great tool saving a lot of time. Simple and useful. Certainly i'll use it.

Great feature, thanks!