Screen share test
See what a screen share shows before you join the call. Pick a screen, a window or a tab, then check the preview, its size and what viewers could see.
Runs in your browser. Nothing is uploaded.
Preview a share
Pick a screen, a window or a tab. It plays here, the way viewers would get it.
This browser can't share its screen
Phones and tablets, including Safari on iPhone and iPad, don't let a web page capture the screen. Open this page in Chrome, Edge, Firefox or Safari on a computer.
This share
- Not sharing
- Not sharing
- Not sharing
What each choice shows
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Whole screen
Everything on that display: notifications, other windows, the menu bar or taskbar, and whatever you switch to.
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Window
Only that window. Other windows, the desktop and the menu bar or taskbar stay out of it.
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Browser tab
Only the page in that tab. Other tabs and the browser's own toolbar stay out of it.
What happens on this page
Your browser asks which screen, window or tab to share, and the preview plays right here. The page reads the size, frame rate and kind of surface the browser reports and lists them below the preview. If a browser leaves one out, the page says so.
The video is not recorded and never leaves this tab. Stop sharing here, use your browser's own sharing controls, or close the tab to end it.
If you share the screen this page is on, the preview shows itself inside itself. That's expected. Pick another window or a second display to avoid it. Freeze frame pauses the preview only; the share keeps running until you stop it.
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Runs in your browser
The tool is code on this page. It does its work on your device, not on a server.
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Nothing is uploaded
What you open here is processed in this tab and never sent anywhere.
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Nothing is kept
There's no account and no history. Close or reload the page and your work is gone.
Share the windows you pick. Nothing else
Curtains puts only the apps you choose on one canvas and shares that. Notifications, other apps and your desktop stay on your screen.