X3F is the RAW image format used by Sigma cameras with Foveon X3 sensors.
PGM (Portable Graymap) is a grayscale image format from the Netpbm family.
FreeFileConvert uses tuned encoding for X3F to PGM conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload X3F files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized PGM 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 PGM audio with dependable progress tracking.
X3F files contain three-layer sensor data from Sigma Foveon sensors.
PGM files support 8 or 16-bit grayscale with ASCII or binary encoding.
Upload your image file in the X3F format from your device, Dropbox, or Google Drive.
Select PGM 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.