I'm looking for an automated tool that takes a file or series of files and creates an image from small sections of the code. Does something like this exist?
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The best results without installing any software you'd get using Instacode. As this is a web service you have to be comfortable with releasing that snippet to the public. Here some samples:
If you're familiar with POV-Ray, that might be also an option. Text object in POVRay.
While POV-Ray and Blender give you most flexibility in tweaking the look at the cost of work/time. Instacode gives you shiny results, well, instantly.