I use SVG images extensively with a fallback for PNG images (at the same URLs).
As Facebook does not support SVG yet I'd like to make all SVG be presented as PNGs in the opengraph metatags. Now I use:
$img = str_replace("svg", "png", $img);
Would it be possible to do it in a more elegant way in theme functions for instance? (npw every plugin update removes it)