Netpbm 10.47.67 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Design & Photo Tools, more precisely Viewers & Editors. The actual developer of this free Mac application is Bryan Henderson. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Netpbm is a toolkit for manipulation of graphic images, including conversion of images between a variety of different formats. There are over 300 separate tools in the package including converters for about 100 graphics formats. Examples of the sort of image manipulation tools:
-Shrinking an image by 10%;
-Cutting the top half off of an image;
-Making a mirror image;
- Creating a sequence of images that fade from one image to another.
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be similar to Netpbm.
Converters