Whether you are trying to share a YouTube video with a room full of people, display a web-based presentation on a boardroom projector, or simply view a photo gallery on a larger screen, huddling around a small laptop is rarely the best solution. If you own a Google Chromecast, an Android TV, or a compatible Smart TV, you do not need to hunt for an HDMI cable. Google Chrome has a built-in feature that allows you to wirelessly mirror your current browser tab directly to the television.
This “Casting” feature works over your local Wi-Fi network and requires zero extra software installations.
Step 1: Check Your Network Connection
Before you begin, there is one absolute requirement: both your computer and your Smart TV (or Chromecast device) must be connected to the exact same Wi-Fi network.
If your TV is connected to your “Home_Network_5G” and your laptop is connected to “Home_Network_2.4G” or a “Guest” network, the devices will not be able to “see” each other, and the cast will fail. Ensure both devices share the identical network name.
Step 2: Initiate the Cast
Casting a tab is remarkably simple once the networking is correct.
- Open Google Chrome on your computer (Windows, Mac, or Linux).
- Navigate to the website or video you want to display on the television.
- Look at the very top right corner of the Chrome browser, next to your profile picture. Click the three vertical dots to open the main Chrome menu.
- Click on Save and share, then select Cast… from the sub-menu.
A small window will appear in the center-top of your browser. Chrome will actively scan your Wi-Fi network for compatible devices. Within a few seconds, the name of your Smart TV or Chromecast (e.g., “Living Room TV”) should appear in the list.
Step 3: Choose Your Casting Source
Before you click the TV’s name, you have a choice regarding exactly what you want to share. Look at the bottom of the Cast window and click the Sources drop-down menu.
- Cast tab (Default): This mirrors only the specific tab you are currently looking at. If you switch to a different tab or open a different application on your computer, the TV will remain frozen on the original tab. This is perfect for privacy during presentations.
- Cast screen: This option mirrors your entire computer monitor. Whatever you see on your screen—including your taskbar, notifications, and other software like Excel or Photoshop—will be broadcast to the TV. (Note: Depending on your operating system, Chrome may ask for permission to record your screen before allowing this).
Select your desired source, and then click the name of your television.
Controlling the Cast
Once connected, your television will instantly display the content. You will also notice a new, blue “Cast” icon permanently resting in your Chrome toolbar next to the extensions.
- Audio: If you are casting a tab playing video or music, the sound will be routed through the television speakers, not your laptop speakers.
- Volume Control: You can control the TV’s volume directly from Chrome by clicking the blue Cast icon and using the slider.
How to Stop Casting
When the presentation or video is over, stopping the connection is equally easy.
- Click the blue Cast icon in your Chrome toolbar.
- The window will show the name of the TV you are currently connected to.
- Click the TV name again to instantly sever the connection and return your TV to its normal interface.