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Known issues

General

  • Some UTF-8 character & font combination cause lockups (typically characters from non-Western languages).

Backends

In general, pixel-exact rendering should not be expected across backends. There are some differences in how images are rendered with the Cairo and NodeBox backends:

  • Font name resolution works differently (e.g. some fonts can be used in one backend but not in the other).
  • Font rendering is slightly different (e.g. font baselines are not in the same Y-position).
  • Shadows look a bit different (NodeBox uses Quartz to render the shadows, while when using Cairo, shadows are rasterized by a custom Python algorithm).
  • Transparent PDF backgrounds are not possible when using Cairo.
  • Shadows are not positioned correctly when outputting SVG files.
  • Gradient colors are not exactly the same.