FITS graphics data
File type: Graphics file
The .fiz file extension identifies graphics data in the FITS format, used by FITSview and other compatible software.
FITS is commonly used for astronomical and scientific image data.
File type category:
Graphics file
Date updated: October 16, 2026
The .fiz file extension is associated with FITS, which stands for Flexible Image Transport System. FITS is a standard data format used in astronomy and other scientific applications.
FITS graphics data can contain scientific image data for transport, analysis, and archival storage. FITSview is a Windows application for viewing this type of data, while ImageMagick provides support on multiple platforms.
On Microsoft Windows, open a .fiz file with FITSview. ImageMagick can also open compatible FITS graphics data on supported platforms.
ImageMagick can export compatible FITS graphics data to common image formats.
The available output formats depend on the program and on the contents of the file.
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