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Clean Font Weights

Make website font-weights standard (400) if below 400

As of 2017-11-20. See the latest version.

// ==UserScript==
// @name         Clean Font Weights
// @namespace    cleanFonts_kk
// @description  Make website font-weights standard (400) if below 400
// @version      0.3
// @author       Kai Krause <[email protected]>
// @include      *
// @run-at       document-end
// @grant        none
// ==/UserScript==

function font() {
	// create the font
	var fontOverride_kk = document.createElement("style");
	fontOverride_kk.innerText = ".fontOverride_kk{font-weight: 400 !important;}";
	document.head.appendChild(fontOverride_kk);

	// Get classes and tags without classes
	var allElements = document.querySelectorAll('*');
	for (var i = 0; i < allElements.length; i++) {
		var css = window.getComputedStyle(allElements[i], null);
		var fontWeight = css.getPropertyValue("font-weight");
		if (fontWeight && fontWeight < 400) {
			allElements[i].classList.add("fontOverride_kk");
		}
	}
}

font();

setInterval(function(){
	font();
}, 8000);