I use the Cura Thumbnails plugin to create and embed thumbnails in my G-code to view them using OctoPrint or my printer LCD. However, I recently found much higher quality Thumbnails that were generated using fast approximate anti-aliasing (FXAA). I was wondering if there is a way to enable or use another tool (slicer) to embed higher-quality thumbnails that were generated using anti-aliasing methods such as FXAA. For example, as generated by the tool unlimitedbacon/stl-thumb as shown below:

An example of thumbnails generated with that tool:

example of generated thumbnails with st-thumb tool

An example of a thumbnail generated without and with FXAA:

example of thumbnail generated without FXAA and with FXAA

  • $\begingroup$ No need of complex antialiasing, they could simply render at 4x the size and downsample with bicubic/lanczos. $\endgroup$
    – FarO
    Commented Feb 9 at 13:44
  • $\begingroup$ I suppose so but I suppose that would take much more unnecessary compute power compared to using hardware accelerated FXAA. $\endgroup$
    – Bob Ortiz
    Commented Feb 13 at 9:09
  • $\begingroup$ @BobOrtiz FXAA is used in GPUs that can do hundreds of frames per second in 4K. This is literally 1 frame, at something like 300x300. Even without a 3D accelerated GPU, done fully in CPU, it will take a fraction of a second, so even if the compute power is several orders of magnitude higher than FXAA, it's still several orders of magnitude below noticeable - and it can be done on devices without gfx hardware acceleration, like some Octoprint SBCs. $\endgroup$
    – SF.
    Commented Apr 1 at 14:48

1 Answer 1


As of May 2023, Cura is working on it as described in this Github issue Ultimaker/Cura/issues/7447. One user suggests the use of the spatial anti-aliasing method supersampling anti-aliasing (SSAA) instead.


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