Convert nef to dds Online: nef2dds

You can use Tom's Editor to easily convert images from
Nikon Digital SLR Camera Raw Image File .NEF to Direct Show Surface .DDS.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

NEF

Nikon Digital SLR Camera Raw Image File is an image format with extension NEF.

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.