Contrek is a Ruby gem with a C++ core for fast contour tracing and edge detection in PNG images. It extracts polygonal contours from bitmap shapes, enabling image processing, shape analysis, and raster-to-vector workflows such as PNG to SVG conversion.

Required Ruby Version

>= 3.0.0

Authors

Emanuele Cesaroni

Versions

  1. 1.4.4 September 19, 2026 (160 KB)
  2. 1.4.3 September 09, 2026 (158 KB)
  3. 1.4.2 September 06, 2026 (152 KB)
  4. 1.4.1 August 23, 2026 (147 KB)
  5. 1.4.0 August 13, 2026 (146 KB)
Show all versions (45 total)

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