Hello, you can use the format that you prefer, the problem with not compression files is size, I don't know the limit for the web, but big size files includes a high traffic for bandwidth too.
All files that you send will be converted to jpg withot compression, that it is not a bad option if it has high resolution. If original source is not a very good scan there are not sense to use png without compresion for files with blured parts.
For not compression files, I do not know what is the corel draw usual file, but png or tif can be beetween 100 and 600 MB per file, that are the usual files for not compression formats. You can upload it to internet archive and share here the links if you want.
Regards and I hope you files in anywhere, always it is good to see new files because not so many people help to preserve all boxes.