PNG

Portable Network Graphics

Produces output in the PNG (Portable Network Graphics) format.

(25 November 2014) A standard Graphviz installation will render using both the Cairo and GD library. By mixing the rendering and formatting of these libraries, one can achieve different variations in the output.

-Tpng:gd (or -Tpng:gd:gd): Indexed color, no antialiasing
-Tpng:cairo:gd: Indexed color, with antialiasing
-Tpng (or -Tpng:cairo): True color, with antialiasing

These options are listed in increasing order of image quality and output size.