I work with some .WSQ images (Wavelet Scalar Quantization) and I can't display neither manipulate them in javaScript. (I can't change the image format for another one like .jpg or .png, it needs to be the original .wsq)

I think a good way to deal with it is developing a library that allows to display and manipulate these images in the browser, but I don't know where to start it.

Anybody knows how can I do it? Any material I can read to help me understand how it is done? (For example, imagine I'm creating a way to display jpeg images in browser with javascript for the first time, what should I do?)