Download Google Chromecast Extension
Though not required, we recommend you pin the Cast button to your Chrome toolbar. This will allow for easier access to Cast functionality from any web page. To pin the Cast button to the Chrome toolbar,. In the upper right corner of Chrome browser, click the Chrome Settings menu 'Cast.'
. The Cast button will temporarily appear in your toolbar.
To keep it there permanently, right-click on the Cast button and click “Always show icon.' If the Cast button is already pinned to your toolbar on your browser, you'll see the Cast button in the Chrome toolbar (near the top right).