How to Share Your Screen Instantly in a Browser with a Room Code

Updated

You can share your screen in a browser without installing anything or creating an account: open the screen-sharing site, create a room, send the room code to your viewers, and they enter that code to watch. This works on desktop browsers that support screen capture. One important limit from the site itself: screen sharing isn't supported on mobile devices — mobile users can still join a room to view a screen someone else is sharing, but they can't start a share.

What you need before you start

  • A desktop or laptop with a modern browser (Chrome, Edge, Firefox, or Safari).
  • Permission to capture your screen when the browser asks. The browser will show a picker so you choose what to share.
  • A way to send the room code to viewers — chat, email, or a message.
  • Viewers only need a browser and the room code. They don't need to install or sign up.

Steps to start sharing

  1. Open the screen-sharing site in your desktop browser.
  2. Click Create Room. The site generates a room and gives you a room code.
  3. If you want a specific code instead of the generated one, use the custom room ID option before creating the room.
  4. Send the room code to the people who should watch.
  5. When the browser prompts you, grant screen-capture permission and pick the screen, window, or tab you want to present.
  6. Start presenting. Viewers who entered the code will see your shared screen.

Expected result: your viewers see your screen in their browser, and you can switch what you're presenting by changing your selection in the browser's sharing controls.

Steps for viewers to join

  1. Open the same site.
  2. Go to Join a Room.
  3. Enter the room code you received.
  4. Click Join Room to view the shared screen.

Viewers on mobile can complete these steps to watch, even though they can't share their own screen.

Common snags and how to handle them

Problem What to check
Browser never asks for screen permission Make sure you're on a desktop browser and that you clicked Create Room; the permission prompt appears when sharing starts.
Viewer can't get in Confirm the room code is exact — codes are case- and character-sensitive.
You're on a phone and can't start Expected: mobile can't initiate sharing on this site. Join from a desktop to share, or watch from mobile.
You shared the wrong window Use the browser's sharing controls to stop and pick a different screen, window, or tab.
You want to stop for privacy Stop sharing from the browser's sharing bar, or close the room so no one can rejoin.

Choosing this approach

This room-code method fits quick, low-friction sharing: a standup, a demo, or helping someone remotely when you don't want to install an app or manage accounts. It's less suited to situations that need recording, scheduled meetings, or phone-to-phone sharing, since mobile can't initiate a share here. If you need those features, a dedicated meeting tool is a better fit; if you just need someone to see your screen in seconds, the room-code flow is the shortest path.