Potrace is a cross-platform, open-source software which converts bitmapped images into vector graphics. It is written and maintained by Peter Selinger. Properties Various graphical frontends are available for the command-line application Potrace. Notably, it has been integrated with Inkscape, giving Inkscape its Trace Bitmap action. FontForge can use Potrace to import a bitmap image into a font. Potrace is also used by the music engraving program LilyPond. An open-source progressive web app that uses Potrace is SVGcode. 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. The program is dual-licensed as "Potrace" under the GPL and as "Potrace Professional" in a proprietary license by Selinger's company, Icosasoft Software, Inc. Examples See also Comparison of raster-to-vector conversion software References Further reading Peter Selinger, Potrace: a polygon-based tracing algorithm, Sep 2003 Elisa de Castro Guerra, Inkscape: Apprenez, pratiquez, créez, Pearson Education France, 2007, , pp. 108–111 Yannis Haralambous, Fonts & encodings, O'Reilly Media, Inc., 2007, , pp. 500–501 Karel Píška, Creating Type 1 Fonts from METAFONT Sources: Comparison of Tools, Techniques and Results in TeX, XML, and digital typography: International Conference on TeX, XML, and Digital Typography, held jointly with the 25th Annual Meeting of the TeX Users Group, TUG 2004, Xanthi, Greece, August 30 - September 3, 2004 ; proceedings, LNCS Volume 3130, Editor Apostolos Syropoulos, Springer, 2004, , pp. 240–256, preprint External links on SourceForge Vince Vatter, How to make slides from handwritten notes using potrace Online version of Potrace ported with WebAssembly Free raster to vector conversion software Free software programmed in C