GUI Designing/Problems

I’m trying to find out a solution on how to make a picture what would perfectly fit a part.
My goal is for the picture to not like stretch at all.

Is there any possible way to find out the perfect size what would suit the part?

Understood nothing what you just said, since I’m a beginner at Roblox scripting and GUI designing.
But I’ll still try to find them out. Thank you!

Hmm… If I currently understand correctly, it would mainly focus on keeping the picture the correct size without stretching the picture out.

Is there any possibility to like get the exact size of a picture what would fit on the part rather than like making the part the size of the picture?

Maybe use the GUI autoscaler plugin.