Hi Pilou!
No tricky or headache at all if you are a little bit familiar with this kind of things :)
Just use the online tool I've reported ( https://www.base64-image.de/) and follow this little example (pseudo code) :
code:
// This is a js node definition file placed inside the "extensions" folder
function NameOfTheNode() {
......
... js code of the constructor function of the node
......
}
// here is the section that is important for you
NameOfTheNode.title = "NodeTitle";
NameOfTheNode.desc = "Node description";
NameOfTheNode.icon = "data:image/png;base64,xxxxxxxxxxxxxxxx";
Where "xxxxxxxxxxx........" is the base 64 code generated by the online tool ( https://www.base64-image.de/)
Nothing more than that :)
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