Black Screen Power Toggle

Black Screen Power Toggle lets you switch the current page into a black screen power off effect and bring it back with a power on animation. Click the extension icon once to darken the page with a shutdown-style overlay, then click again to restore it.

The effect is injected with Shadow DOM, so it stays visually isolated from the page and works as an overlay instead of rewriting the page content. This makes it useful for demos, visual experiments, screen-off transitions, and motion references.

Features:
• One-click toolbar trigger
• Black screen power off effect
• Power on recovery animation
• Visual overlay without changing page content
• Shadow DOM style isolation

This extension injects a visual overlay into webpages only to render the black screen power effect. It does not collect personal data or send page content to external servers.