Convert fits to jpg Online: fits2jpg

You can use Tom's Editor to easily convert images from
Flexible Image Transport System .FITS to Joint Photographic Experts Group JFIF .JPG.
Tom's Editor is a free, online image manipulation and converter program.

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FITS

Flexible Image Transport System is an image format with extension FITS.

JPG

Joint Photographic Experts Group JFIF is an image format with extension JPG.