Roku devices primarily rely on their own app ecosystem and don’t support direct casting from Chrome. However, you can still mirror your entire computer screen to your Roku TV using screen mirroring.

Here’s how you can do it:

1. Enable Screen Mirroring on Your Roku TV:

   • Go to Settings > System > Screen Mirroring and enable it.

2. Use Your Computer’s Built-in Screen Mirroring Feature:

   • Windows:

     • Open the Action Center (usually the notification icon in the bottom right corner).
     • Click the Connect button.
     • Select your Roku TV from the list of devices.

   • Mac:

     • Open Control Center (swipe down from the top-right corner of the screen).
     • Click Screen Mirroring.
     • Select your Roku TV from the list of devices.

Once your computer’s screen is mirrored to the Roku TV, you can open Chrome and navigate to the tab you want to view on the larger screen.