Test your screen share before the meeting
See exactly what the other people on the call will see, and find out whether you are sharing a tab, a window or your whole screen. Nothing is recorded or sent anywhere.
- Free, no sign-up
- Nothing recorded
- No test call needed
Screen share test
See exactly what a meeting receives
See what a meeting would see
Press Start, then pick a tab, a window or your entire screen, just as you would in Zoom, Meet or Teams. The preview stays in this tab and is never recorded or sent.
- Nothing recorded or sent
- Same picker as Meet, Zoom, Teams
- Tab, window or screen
Nothing recorded or sent. The preview is shown only in this tab and nothing is stored. The capture ends when you stop sharing.
Updated October 2026
Quick answer
To test a screen share, start a capture in your browser and look at the stream it produces. This page does that with the same browser picker meeting apps use, then tells you which mode you chose. Sharing one browser tab shows only that page; a window adds its tab strip and address bar; the entire screen adds notifications and every other app.
Found something in the preview?
Blur it in the page before you share
Sharing a tab hides everything around the page, but nothing on it. Blurr.ing blurs any region, element or line of text in the live page in Chrome, so the meeting, the recording and every screenshot only ever receive blurred pixels. Drawing blurs is free and unlimited.
- Draw a box, select text or click an element. Free and unlimited.
- Screenshots come out with the blurs already in the picture. 5 free, unlimited on Premium.
- Auto Blur, Blur Text and Tab Privacy hide things for you on every page. Try each one free.
Free to install, for Chrome on a computer.
How it works
How to test your screen share
- 1
Press Start the test
Your browser opens the same share picker that Zoom, Google Meet and Microsoft Teams use in the browser. Tick "Also test sharing audio" first if you plan to share sound.
- 2
Pick what to share
Choose a browser tab, a window or your entire screen, the way you would in a meeting. Pick a different tab from this one, or the preview will mirror itself.
- 3
Read the preview
The preview is the stream a meeting would receive. The panel beside it names the surface you shared and explains what viewers can see in that mode.
- 4
Snapshot and fix
Take a snapshot and look for names, numbers, notifications and tab titles. Blur or close what should stay private, then test again.
Tab, window or screen
What viewers see in each sharing mode
The mode you pick in the share picker decides the frame. What is on the shared page is visible in all three.
| You share | Viewers see | Best for |
|---|---|---|
| Entire screen | Everything on that display: every app, the taskbar or dock, notifications, all browser tabs | Only when you must switch between several apps |
| Window | That one window, including a browser's tab strip, address bar and bookmarks | One desktop app, or a browser window you have tidied |
| Browser tab | Only the page inside the tab: no address bar, other tabs, desktop or notifications | Web apps, docs, dashboards and slides: the private default |
The test runs in your browser, so it shows what browser-based meetings receive. Desktop apps such as Zoom and Teams use their own picker, but the three modes and what they expose are the same.
Keep exploring
Share your screen without the surprises
What people can see when you share
Screen, window and tab compared in Zoom, Google Meet and Microsoft Teams, notifications and cursor included.
Share a tab, not a window
The one-click upgrade that keeps your address bar, other tabs and notifications out of the meeting.
Screen share privacy checklist
Nine checks in five minutes, including what an extension cannot hide.
Blur before you screen share
Hide salaries, customer data and dashboards inside the page before you present.
FAQ