Potrace written by Peter Selinger is a tool for tracing a bitmap, which means, transforming a bitmap into a smooth, scalable image. The input is a bitmap, and the default output is one of several vector file formats. 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. Potrace can currently produce the following output formats: EPS, PostScript, PDF, SVG (scalable vector graphics), DXF, GeoJSON, PGM (for easy antialiasing of pixel-based images), Gimppath, and XFig. Additional backends might be added in the future. A separate program, mkbitmap, is also provided. This program can act as a pre-processor for Potrace, applying scaling and various filters to an image before converting it to a bitmap. This is useful for potracing greyscale and color images.