Convert nef to gif Online: nef2gif

You can use Tom's Editor to easily convert images from
Nikon Digital SLR Camera Raw Image File .NEF to CompuServe Graphics Interchange Format .GIF.
Tom's Editor is a free, online image manipulation and converter program.

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NEF

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

GIF

GIF images were created by Compuserve. They can used no more than 256 colors and a single color transparenty (no Alpha channel). Today are rare since they offer low quality and huge filesizes. GIF animations are still in use.