User:Opencooper/svgReplace.js Source: en.wikipedia.org/wiki/User:Opencooper/svgReplace.js

// Crudely replaces all PNG thumbnails for SVG files with their actual SVGs
// Warning: Downloads SVG files in addition to PNGs, so shouldn't be used
//          by the bandwidth-conscious 
// License: CC0
function replaceSvg() {
    if (!(mw.config.get('wgAction') === 'view' && mw.config.get('wgIsArticle'))) {
        return;
    }

    $("#bodyContent img[src$='.svg.png']").each(function() {
        var src = $(this).attr("src");
        // Regex will break if thumbnail URL structure changes
        src = src.replace(/(\/\/.*)\/thumb(.*.svg).*.svg.png/, "$1$2");
        $(this).attr("src", src);
        $(this).removeAttr("srcset");
    });
}

$(replaceSvg);