After dealing with fair use images on user pages, and working with SVG image
files, I have been quietly making some unilateral additions to WP:IUP and
WP:FUC (actually they are corollaries to already existing policies).
The additions in a nutshell: Avoid uploading fair use images in SVG format
because SVGs are, in essence, infinite-resolution images. They can be
expanded to any size and still maintain the same quality high resolution.
An example of this can be found at [[Wikipedia:Preparing images for
upload#Why you should use SVG over PNG]].