I think it would be a neat idea (if it doesn't exist already) to have a site with a collection of similar pages like this for many different formats.

Similar to the other comment "Bit-mapped Graphics" by Steve Rimmer [0] is an excellent reference.

[0] https://archive.org/details/bitmappedgraphic0000rimm

I still have this book on my bookshelf, but yes, maybe a web page per format might be easier to use these days.

https://archive.org/details/mac_Graphics_File_Formats_Second...