I found this tool a while back but can't seem to remember how it's done. Basically, I remember there being a tool in Inkscape where you select a bitmap image that has transparency, and it will create a path around the visible part of the image. I know for certain it's not in the Trace Bitmap option, but I can't remember where it is. I also remember the smoothness of the path being relative to how zoomed in/out you were for some reason. Here's an example of what it outputs:

two examples of what the output looks like

  • What is the end goal that you want to achieve with this? Maybe you want to add additional stroke around the image?
    – Joonas
    Jun 5, 2015 at 8:31

2 Answers 2


Try the bucket fill tool. Set the threshold level to something high, say 10 or above to smoothen the trace.enter image description here

  • You, my good sir or madam, have found that mystery tool I've been searching for (and it was in an obvious spot too)! Thank you so much!
    – Spice
    Jun 6, 2015 at 19:27

I don't know a a specific tool but you could accomplish this by: Trace Bitmap at a setting that makes everything one color. Now you have a shape that matches the non-transparent portion of the bmp. Set that shape to no fill with a colored stroke.

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