FITS (Flexible Image Transport System) is a standard format for astronomical data.
Sun Raster is an image format from Sun Microsystems workstations.
FreeFileConvert uses tuned encoding for FTS to SUN conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload FTS files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized SUN results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent SUN audio with dependable progress tracking.
FITS files can contain multi-dimensional data, tables, and extensive metadata headers.
Sun Raster files can contain 1, 8, 24, or 32-bit images with optional RLE compression.
Upload your image file in the FTS format from your device, Dropbox, or Google Drive.
Select SUN as the output format and click Convert. Adjust optional settings if needed.
Download the converted image file. Each file stays available for up to 5 downloads.