I created a simple example plot in R and exported it as a PDF. I use Inkscape to create an SVG file. However, I have noticed that the font is different when I use the internal library to import the plot, compared to importing with Poppler/Cairo. This behavior also occurs when I uncheck the "Replace PDF fonts by closest-named fonts" option for the internal library.
It seems that the font with the internal library is slightly smaller and less bold. However, when I make the font bold in Inkscape, it is much larger. In the following I show only the title of the plot, because there the difference is most apparent.
Any suggestions on how to circumvent this behavior of the internal library? Because the font seems to match the PDF when I import with Poppler/Cairo. The reason I would prefer importing with the internal library is the smaller file size.
Import with Poppler/Cairo:
Import with the Internal Library: