Convert ap2 to dds Online: ap22dds

You can use Tom's Editor to easily convert images from
256, AP2 .AP2 to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

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AP2

256, AP2 is an image format with extension AP2.

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.