For Visual Studio, the Supercharger extension is capable of embedding images in comments. Those with Supercharger will see the inlined image, and those without

For Visual Studio, the Supercharger extension is capable of embedding images in comments. Those with Supercharger will see the inlined image, and those without will just see the markup containing the image path. It's not as powerful as what Racket is capable of with images-in-code, but gets the job done for most purposes.