[KMnO4]

Related, SVGO (or my preferred in-browser frontend, SVGOMG[0]) does a wonderful job of cleaning up SVGs and removing unnecessary metadata/comments. I throw every SVG into it before it enters my codebase.

[0]: https://jakearchibald.github.io/svgomg/

[RL_Quine]

Doesn't prevent someone from encoding the IP address in colors or something though.