Threshold pbm

Download and install the latest version of Filestar.
Right click on one or more Pbm file(s) on your desktop and select Convert with Filestar.
Type threshold in the search box.
Press Run.

What is .pbm?

Name: Portable Bitmap Image
Extension: .pbm
Format: Binary
Category: Raster Image
Developer: Wolfgang Hoschek
Description: 1-bit black and white image; formatted in text format; basic raster image format in which each pixel is represented by a byte that contains a 1 or 0; 1 represents black and 0 represents white pixels.
MIME Type: image/x-portable-bitmap
Sample: sample.pbm
Wikipedia: .pbm on Wikipedia

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Last updated October 3, 2026