Projects / Potrace


Potrace is a utility for tracing a bitmap (that is, transforming a bitmap into a smooth, scalable image). The input is a portable bitmap (PBM), and the default output is an encapsulated PostScript file (EPS). A typical use is to create EPS files from scanned data, such as company or university logos, handwritten notes, etc. The resulting image is not "jaggy" like a bitmap, but smooth. It can then be rendered at any resolution.

Operating Systems

Recent releases

  •  20 Feb 2013 04:24

    Release Notes: This release adds a GeoJSON backend, support for bitfields in the BMP format, and a minor change in the behavior of the alphamax parameter (a value of 0 now gives a true polygon).

    •  19 Aug 2011 17:38

      Release Notes: A DXF backend was added. The output is in the drawing interchange format used by computer aided design software. The Gimppath backend was changed to be compatible with current versions of GIMP. The EPS, PDF, and SVG backends now use high-resolution bounding boxes. The default scaling of the EPS, PDF, and SVG backends is now fixed at 72dpi. A new option --flat was added to the SVG backend. A new option --tight was added to remove whitespace around the input image before calculating its scaling and placement.

      •  22 Dec 2010 00:05

        Release Notes: The xfig and eps backends were improved, and a fixed pagesize PDF backend was added. Support for BMP version 4 and version 5 files, as well as top-down BMP files, was added. Minor speed improvements were made to Potrace and major speed improvements were made to mkbitmap. A Gaussian blur option was added to mkbitmap. Libtool is now used to build and optionally install the Potrace library. An optional simplified progress bar was added for dumb terminals. This release also contains some portability improvements, cross-compilation improvements, and minor bug fixes.

        •  10 Apr 2007 17:09

          Release Notes: This release contains minor bugfixes and portability improvements. Rotation is now implemented in the PDF backend.

          •  06 Mar 2005 10:17

            Release Notes: This is a bugfix release. A bug in the progress bar code, which caused arithmetic exceptions on some 64-bit architectures, has been fixed.


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