What are all the file types that are supported by the CSS property background-image?

Question

I cannot find any primary source documentation on what file types are supported by background-image. The W3 specifications specify "visual" media, but I cannot find a reference to file types.

Answer 1

probably css background depend most formats usage like : jpg jpeg png and more ...

here in mdn some supported image formats enter image description here

don't use any wired format