OTB is a bitmap format for mobile devices, used for operator logos and graphics sent via SMS.
PAM (Portable Arbitrary Map) is an extended Netpbm format supporting any number of channels.
FreeFileConvert uses tuned encoding for OTB to PAM conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload OTB files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized PAM 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 PAM audio with dependable progress tracking.
OTB images are small monochrome bitmaps optimized for mobile transmission.
PAM files can contain grayscale, RGB, or RGBA data with 1 to 65535 maximum value.
Upload your image file in the OTB format from your device, Dropbox, or Google Drive.
Select PAM 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.