Potrace () is cross-platform, open-source software which converts raster graphics images into vector graphics. It is written and maintained by Peter Selinger.
Potrace's input and output is black and white (colored images are greyscaled before processing). However, Inkscape is capable of producing color images by decomposing each channel into several black and white images and tracing them separately with Potrace. The commercial Total Vectorize program also uses Potrace as its core.
Potrace is licensed under the GNU General Public License v2.0 or later. A non-GPL version of Potrace called "Potrace Professional" is available under license from Selinger's company, Icosasoft Software, Inc. Dual licensing program for Potrace
Image:Polydactyly 01 Lhand AP.jpg|Source image [[JPEG]] [[grayscale]] (891×1,077 pixel, 119 KB)
Image:6fingeredhand-potrace.svg|Traced with Potrace in Inkscape to an eight-color SVG image in 2006 (50 KB)
Image:Polydactyly_01_Lhand_AP-vectorized-8color-new.svg|Traced with Potrace in Inkscape to an eight-color SVG image in 2012 (336 KB)
Image:Polydactyly_01_Lhand_AP-vectorized-12color.svg|Traced with Potrace in Inkscape to a twelve-color SVG image in 2012 (608 KB)
Image:Polydactyly_01_Lhand_AP-vectorized-16color.svg|Traced with Potrace in Inkscape to a sixteen-color SVG image in 2012 (743 KB)
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