Use multiple BlurBoxes at once

Most setups use more than one BlurBox. You might cover an email recipient field in one window, an API key in another, and a notification preview in a third. BlurBox handles all of these independently — each overlay tracks its own window.

Tips for managing multiple overlays

• Use the keyboard shortcut for fast creation: ⌃ ⌥ ⌘ B for default size, ⌃ ⌥ ⌘ V to draw a custom rectangle.
• Keep similar stylesacross overlays. A consistent Frosted Glass look reads as “intentional”; a mix of styles can look chaotic in a screen recording.
• Avoid Lava Lamp at high counts. Lava Lamp is more expensive than Frosted Glass. If you have 10+ overlays, prefer Frosted Glass to keep CPU light.
• Use “Hide All” from the menu bar to temporarily clear the screen — useful when you need to grab a clean screenshot of your underlying app, then bring overlays back.
• Reset the entire setup with ⌃ ⌥ ⌘ X— this deletes every BlurBox at once. Use with care; there's no undo.

Performance

We've tested 20+ overlays running at the same time without meaningful slowdown on Apple Silicon. If you find your fan turning on, switch any Lava Lamp overlays to Frosted Glass — that's the single biggest CPU saver.

What's next?

• Use BlurBox across multiple monitors
• Switch between Frosted Glass and Lava Lamp