Convert gif to hdr Online: gif2hdr
You can use Tom's Editor to easily convert images from
CompuServe Graphics Interchange Format .GIF to Radiance RGBE image .HDR.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
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.
Radiance RGBE image is an image format with extension HDR.