Display
Fullscreen Test
Test fullscreen API support and enter fullscreen mode in your browser.
Live Result
Detecting…
What is it?
The Fullscreen API allows web pages to expand to cover the entire screen, hiding browser chrome. Support varies across browsers and requires user interaction to activate.
Why this matters
Video players, presentations, and immersive web apps rely on fullscreen mode. Testing confirms whether your browser supports the standard API.
Troubleshooting
Fullscreen request blocked
Browsers require a user gesture (click or tap) before allowing fullscreen. Try clicking the fullscreen button.
Related Tools
Explore more diagnostics
Visit the DeviceScope homepage for a complete live dashboard, or browse all tools in the Display category.