Convert avif 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 AVIF files as you like.
Real FITS output
Encoded by magick, the same library the command-line tools use — not a renamed extension.
About AVIF
AV1 Image File Format
An image format from the Alliance for Open Media, finalized in 2019, that stores AV1-compressed images in a HEIF container. It supports lossy and lossless compression, alpha and HDR, and its files are often smaller than WebP. Use it for web images when you want the smallest files; current Chrome, Firefox and Safari all display 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.