If you need the highly visual breadboard view, you will have to do a slightly simplified, to scale, engineering drawing with a svg editor - look at an Adruino board from the bin, and you will see that every square and circle had to be drawn and positioned -.
If it's a complex part you can imagine how long it will take to do an engineering drawing of it, and if you have no svg drawing experience that is another order of magnitude harder than learning Fritzing.
If you only need a bodgie part you can import a pic and fudge contacts, but you will still need an engineering drawing of the PCB view.
Do you have a pic/link, so we can see what it entails.