Threshold ppm

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

What is .ppm?

Name: Portable Pixmap Image
Extension: .ppm
Format: Text
Category: Raster Image
Developer: Jef Poskanzer
Description: A PPM file is a 24-bit color image formatted using a text format. It stores each pixel with a number from 0 to 65536, which specifies the color of the pixel. PPM files also store the image height and width, whitespace data, and the maximum color value.
MIME Type: image/x-portable-pixmap
Sample: sample.ppm
Wikipedia: .ppm on Wikipedia

Last updated October 3, 2026