I wanted to add some graphics in my diagram (as illustrations).
I created the graphics with inkscape, saved them as svg.
The only way seems to insert them into yEd seems to be the symbol import. Then place the new symbols in the diagram.
after finishing the diagram: export as PDF: bad result in the area with the new symbols, file size 0,5MB
print to pdf creator: good result, but big file 3MB
bug in PDF export?