FITS (Flexible Image Transport System) is the standard format of astronomy, storing telescope and scientific image data with extensive metadata headers.
FITS opens in astronomy software like SAOImage DS9, FITS Liberator and Astropy; convert to PNG/TIFF to view normally.
Share, post and embed pictures across sites and apps.
Work with the format in editors like Photoshop and GIMP.
Keep memories and assets in a widely-readable form.
| ✔ Strengths | ✖ Limitations |
|---|---|
| Purpose-built for its niche | No transparency support |
| Limited support — may need converting |
Remove the background from FITS images, upscale to 4K, or generate new visuals with SharkFoto AI.
FITS (Flexible Image Transport System) is the standard format of astronomy, storing telescope and scientific image data with extensive metadata headers.
FITS opens in astronomy software like SAOImage DS9, FITS Liberator and Astropy; convert to PNG/TIFF to view normally.
FITS is optimised for its specific use rather than strictly lossless storage.
Use SharkFoto's free tools — upload your FITS file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — FITS doesn't store transparency; convert to PNG or WEBP if you need it.