Fullscreen API Test

Enter and exit fullscreen on a page element using the Fullscreen API.

Processing: runs in your browser, nothing uploaded

Enter and exit fullscreen on a page element using the Fullscreen API.

Browser API only — nothing is uploaded or stored on our servers.

Fullscreen target box

About Fullscreen API Test

Fullscreen API Test on FileToolsHub is a free online browser tool that helps you enter and exit fullscreen on a page element using the Fullscreen API.

It is built for people testing devices and browser capabilities before a call or ticket.

Because Fullscreen API Test is client-side, you can work with sensitive snippets without sending them to a third-party converter.

How it works: Click Enter fullscreen.

How to use Fullscreen API Test

1
Click Enter fullscreen.
2
View the target box maximized.
3
Exit when finished.

Why use Fullscreen API Test

Fullscreen API
Element-scoped
No upload
Private

Use cases

Run Fullscreen API Test to check this device or browser capability
Capture details for a support ticket before a meeting

Privacy

Fullscreen API Test runs entirely in your browser on FileToolsHub. Your display is processed in this tab and is never uploaded to our servers.

That means passwords, tokens, personal notes, and documents you paste or load stay on your device. Clear the page or close the tab when you are finished on a shared computer.

You still need a network connection to load the page the first time. After that, the core processing for Fullscreen API Test does not require sending your content to FileToolsHub.

Limitations

Fullscreen API Test depends on your browser. Very large inputs may slow or freeze older devices; try a smaller sample if the tab becomes unresponsive.