<html>
<head>
  <meta name="description" content="{addon-description}">
  <meta name="keywords" content="{addon-keywords}">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <meta property="og:title" content="{addon-title} - {addon-page-title-append}">
  <meta property="og:description" content="{addon-description}">
  <meta name="application-name" content="{addon-title} - {addon-page-title-append}">
  <meta property="og:image" content="{addon-logo}">
  <link rel="icon" type="image/png