Convert PBM Portable Bitmap images to PNG, JPG, WebP and more. Pure black & white format — convert free in your browser.
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PBM (Portable Bitmap) is the simplest image format — storing only pure black and white pixels with no gray, no color. Used in Unix/Linux image pipelines and research, PBM files can't be opened in standard apps. PixelForge converts PBM to PNG, JPG, or any format instantly in your browser.
PBM (Portable Bitmap Format) is the black-and-white member of the Netpbm family (alongside PGM and PPM). Each pixel is either 0 (white) or 1 (black), making PBM the absolute simplest image format. PBM files exist in ASCII text format (.pbm text) and binary format (.pbm binary). They are used in document processing, OCR preprocessing, fax systems, and research.
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View on any device
PBM can't be opened in standard image viewers. Convert to PNG or JPG to view black-and-white image data.
Document processing
Convert PBM document scans and fax images to PDF or PNG for archiving.
Research output
Convert PBM from image processing pipelines to standard formats.
File size
PBM is uncompressed. Convert to PNG for lossless compression.