title: PageSpeed review and optimization
body: <p>I analysed my page speed using google pagespeed insight and got below suggestion. Can any one help me how I can implement it.</p>
  
  <pre><code>Leverage browser caching
  Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
  Leverage browser caching for the following cacheable resources:
  http://www.googletagmanager.com/gtm.js?id=GTM-TVSKP6 (16.2 minutes)
  </code></pre>