Convert jpg to fits
Converted on your device. Files never leave this tab.
Nothing is uploaded
The converter runs inside this page. Cut your network after it loads and it still works.
No account, no daily limit
No sign-up, no daily limit, no watermark, no queue behind other people's files. Batch as many JPG files as you like.
Real FITS output
Encoded by magick, the same library the command-line tools use — not a renamed extension.
About JPG
JPEG (Joint Photographic Experts Group)
A lossy image format standardized in 1992 that shrinks photos by discarding detail the eye is less likely to notice. It has no transparency, and each re-save loses a little more quality. Use it for photos you want to share or upload, since nearly every device, browser and app opens it.
About FITS
Flexible Image Transport System
The standard data format in astronomy since 1981, storing images and tables behind plain-text headers that record telescope and observation details. Convert from FITS to get a viewable PNG or JPG of telescope data; convert to it for astronomy software.