Convert max to dds Online: max2dds

You can use Tom's Editor to easily convert images from
XL-Paint MAX .MAX to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

MAX

XL-Paint MAX is an image format with extension MAX.

DDS

DDS are files invented by Microsoft to be used in games, mostly as textures. Images can be compressed to save space but the compression methods defined by DDS are all very fast in terms of coding and decoding.