SFW is a proprietary image format from Seattle FilmWorks photo processing.
PFM is a floating-point extension of the PGM format for HDR images.
FreeFileConvert uses tuned encoding for SFW to PFM conversions, preserving clarity while trimming file size. Finished images open instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload SFW files from desktop or tablet, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized PFM results on any device you rely on.
Process up to 5 files sized 1024 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent PFM images with dependable progress tracking.
SFW files contain images from Seattle FilmWorks digital photo service.
PFM files store grayscale or RGB images with 32-bit floating-point values.
Upload your image file in the SFW format from your device.
Select PFM 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.