PNM is a generic term for PBM, PGM, and PPM formats from the Netpbm family.
RGBA is a raw image format with red, green, blue, and alpha channels.
FreeFileConvert uses tuned encoding for PNM to RGBA conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload PNM files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized RGBA 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 RGBA audio with dependable progress tracking.
PNM files use simple ASCII or binary format for portable image storage.
RGBA files contain raw 32-bit pixel data with transparency information.
Upload your image file in the PNM format from your device, Dropbox, or Google Drive.
Select RGBA 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.