How image that is 200KB is turnet to 8MB Sprite in Unity?

Hello there,

I am new to Unity but determined to make my own 2D game. I already make all textures I need.
There are some things in Unity that I can't find out.

I have 200KB image for background, but put it in Unity it turns to 8MB sprite. What does this difference?

How can I optimize the image to be small as possible but not to lose quality even in 2K devices?

Please help me. Thank you in advance
Good Luck

 

Unfortunately, there isn't much you can do about that right now. Turning off mipmaps (if its enabled) will save a little bit of space.

Vote for this feedback item: http://feedback.unity3d.com/suggestions/png-and-jpg-texture-format