How do you insert a picture into Excel W/O losing quality?

I know how to insert pictures into Excel, and have even found some great Macros that can automatically do it for you. But there’s an issue.

Whenever I try to retrieve the picture, it always has lost a lot of quality. It starts to get pixelated, blurred, etc. And if you put a picture in, take it out, and repeat that a few times it starts to become unrecognizable.

Do you know how to import and export a picture without losing any quality or integrity in the picture?

Thank you!