There is a plan (called Oxidation) to merge components written in Rust into Firefox, but I doubt the rendering will be one of them, at least any time soon.<p><a href="https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;Oxidation" rel="nofollow">https:&#x2F;&#x2F;wiki.mozilla.org&#x2F;Oxidation</a>