[kaeruct]

Wouldn't this make the code snippets completely inaccessible since you cannot copy text from an image?

[mechero]

Indeed, but I'd link the GitHub code sources below each picture and provide good alt descriptions. JS plugins like Highlight or Prism end up building massive HTML making e.g. google's pagespeed tools complain about DOM sizes.

And, anyway, most people would rather clone the public repo or use GitHub for copy/paste purposes.