Window sandbox

Try PrismWindow: open, stack, drag, resize, and put the page under load. Back to Prism

Open windows

0 open

Busy page: re-render a 2,000-cell grid every 100 ms behind the windows

Dark stage: render the sandbox and its windows in dark mode

Remember size: new windows open at the last size you resized one to

Most windows open at once

Drag a title bar fast in circles with Busy page on. The window should stay under the pointer.
Resize from the corner grip past the screen edge. The window stops at the edge and never shrinks below 360 × 220.
Click a window behind another. It comes to the front.
Tab to a title bar and press the arrow keys to move it; Shift moves 50 px. Do the same on the grip to resize; Enter restores the default size.
Double-click a title bar to maximize; double-click again to restore. Minimize keeps only the title bar.
Press Escape inside a window to close it.
Open more windows than the limit. The oldest one closes.

A long task blocks the page for over 50 ms. While one runs, a window cannot move.

Open a window to start.