User:JPxG/signpost-filetools.js

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Documentation for this user script can be added at User:JPxG/signpost-filetools.

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$( function() {
    if( (window.location.href.indexOf( "File:" ) >= 0 ) || (window.location.href.indexOf( "File%3A" ) >= 0 )) {
    	var res = document.getElementsByClassName("fileInfo")[0].innerHTML.replaceAll(/ pixels.*/g, "").replaceAll("(","").replaceAll("SVG file, nominally","").replaceAll(" ","").split("×");
    	// should produce [width, height].
    	var size = int((int(res[0])/int(res[1])) * 301);
    	
    	// Put this in a div.
    	var newDiv = document.createElement('div');
    	newDiv.class = "signpost-filetools";
    	newDiv.innerHTML = String(size);
    	document.getElementsByClassName("mw-filepage-resolutioninfo")[0].appendChild(newDiv);

    } // if page title has "File:" in it
} );