n render() {
          const purifiedURL =
            location.origin +
            "/?" +
            (color ? "color=" + encodeURIComponent(color) + "&" : "") +
            (bgColor ? "bgcolor=" + encodeURIComponent(bgColor) + "&" : "") +
            "from=" +
            encodeURIComponent(equation)
              .replace(/\(/g, "%28")
              .replace(/\)/g, "%29") +
            ".svg";
          responseHTML.value = '<img src="' + purifiedURL + '" />';
          responseMarkdown.value = "![Equat