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Actually, on can convert base64 to all kind of images (png,svg ...), but how to convert base64, png, svg to tikz now ?

There is no command to my knowledge that allows to embed base64 without running external command base64-d with --shell escape option. So the neetest option would be to have a method to convert images to tikz.

Inkscape add on to convert images to tikz does not work anymore with new versions of inkscape.

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    I don't really understand your last paragraph. Inkscape uses svg2tikz to convert images to tikz. This works still fine with the current version of inkscape. – user36296 Sep 18 '18 at 14:41
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    If you want to display base64 images, have a look at ctan.org/pkg/inline-images?lang=en – user36296 Sep 18 '18 at 14:43
  • Such a thing could be implemented in Lua, perhaps. – AlexG Sep 18 '18 at 14:49
  • @sam this package uses an external tool, hence requires --shell-escape. – AlexG Sep 18 '18 at 14:50
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thank you for your comments.

So for svg2tikz, the main [https://github.com/kjellmf/svg2tikz][https://github.com/kjellmf/svg2tikz], package is not maintained but there is a pull request that works.

I could run

wget https://rviews.rstudio.com/css/images/rstudio.svg
pip install git+git://github.com/kjellmf/svg2tikz --user
svg2tikz --figonly rstudio.svg

For base64 to svg, I found it here:

[https://stackoverflow.com/questions/22038824/decode-base64-svg-data-to-a-svg-file][1]

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