What I want from favicons is SVG support.<p>It makes so much sense it hurts, especially when we think of desktop links, home page pins, etc.<p>The whole &quot;bundle multiple sizes of animated files into one container&quot; is crazy when they are nearly always different resolutions of precisely the same file.<p>If we have SVG we could modify the SVG at runtime to have it display additional data really easily.<p>As for video in favicons... kill me now. SVGs and a strict limit on favicon sizes would be good (enforced by browsers, ditch anything over 50KB - it should be more than enough!).<p>A nice bug I saw recently was that a server could be instructed to send an infinitely sized favicon, and the browser would happily consume it. Nice way to drain a phone battery, use all of the connection bandwidth, and just to play havoc.<p>What I want from favicons:<p>1) SVG<p>2) SVG support for icons in all major OS&#x27;s so that desktop links and homepage links just work as SVG<p>3) Max-size enforced by browsers