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Why convert HEIF to FTS?
Fast
Your file is converted in under 30 seconds in our cloud.
Secure
Files are automatically deleted after 1 hour.
Quality preserved
Maximum quality preserved during conversion.
About the HEIF format
HEIF — High Efficiency Image File Format
HEIF is the container format standard developed by MPEG for storing images encoded with HEVC (H.265). While HEIC is the specific Apple implementation, HEIF is the underlying open standard that supports a broader range of encoders including AV1 (AVIF).
Common uses
- Cross-platform modern image delivery
- HDR and wide color gamut images
- Image sequences and live photo storage
- Next-generation camera output formats
About the FTS format
FTS — Flexible Image Transport System (FITS)
FITS (Flexible Image Transport System) is the standard format used in astronomy for storing scientific data, images, and tables. Developed by NASA and the IAU, it is the universal format for telescope observations, space mission data, and astronomical image archives.
Common uses
- Astronomical image and data storage
- Telescope and space mission image archives
- Scientific image analysis in astrophysics
- Converting telescope data to viewable formats
Related conversions
Other conversions available for HEIF and FTS files
Frequently asked questions
Is the conversion free?
Yes, basic conversion is completely free. For large volumes, check out our paid plans.
What is the maximum file size?
Free accounts can convert files up to 25 MB. Pro accounts up to 100 MB.
How long are my files kept?
Files are automatically deleted after 1 hour on the free plan, 24 hours on Pro.
What formats are supported?
We support over 200 source and target formats. See our complete formats page.