Large images won't render

[willstott101]

If the SVG file is of a size larger than $wgSVGMetadataCutoff (256KB) then fetching the nominal image dimensions fails.

The SVG is still served to the browser, but hidden due to max-width being set to 0px, is there some way to make the img element a sensible size without this server data?

[willstott101]

Currently the images seem to be rendered with:

    height: auto;
    width: 100%;
    max-width: $img_width;

but would it not make more sense to render with:

    height: auto;
    max-width: 100%;

?

[willstott101]

Basically this comes down to https://phabricator.wikimedia.org/T199737#6366134

Mediawiki fails to find the size of the SVG if it's file size is large enough.

[willstott101]

Drawio seems to add a content attribute to the main <svg> tag. Moving the data to elsewhere in the SVG doesn't help Mediawiki process the file. Even though https://www.mediawiki.org/wiki/Manual:$wgSVGMetadataCutoff implies it ought to, as the width and height are definitely within the first 256 bytes.