Tap the screen and it cracks exactly where your finger landed, with a flash, a jolt and the sound of glass giving way. Tap again and the cracks spread into a web. Press and hold, and the whole panel shatters. Every crack is a real photograph of broken glass laid over the screen, not a drawing, so from normal viewing distance the illusion holds up on a phone, a laptop or a TV.
What sits under the glass is up to you. The default is a fake lock screen with the current time and date over a wallpaper, which is what makes the prank work on a phone: hand it over and the owner sees their “lock screen” in pieces. Switch to plain black for a monitor, or pick any colour. Turn on LCD damage and coloured lines and a dark liquid patch appear beneath the cracks, the way a real panel fails after a drop.
For the long game, Download as wallpaper saves the current mess at this device’s exact screen resolution. Set it as the lock screen and the prank survives without a browser tab. Nothing is actually damaged: press Esc, close the tab, and the glass is perfect again.
What people use it for
The dropped-phone prank
Open it on someone’s phone, tap a few times so the cracks spread from one corner, go fullscreen, lock the rotation and hand it back: “it was like that when you gave it to me.”
Wallpaper version
Download the cracked screen as a wallpaper and set it on the lock screen. The victim unlocks the phone, sees shattered glass over their own clock, and only works it out when the icons behave normally.
Reaction videos and shop windows
A 4K TV that looks shattered stops people in their tracks; a phone that cracks on camera the moment someone touches it is a complete gag in one take.
Frequently asked questions
Is this a real crack or just an image?
Each crack is a high-resolution photo of genuinely shattered glass, made transparent and placed where you tap. Nothing on your device is touched or damaged; it only looks broken.
How do I make the cracks look realistic on a phone?
Keep the fake lock screen behind the glass, tap two or three times near one corner rather than all over, go fullscreen, and set the brightness high. Hand the phone over at arm’s length; the illusion is strongest at normal viewing distance.
What does press and hold do?
Holding your finger or the mouse button for about half a second triggers a full-screen shatter with the heavy breaking sound. The Shatter button does the same.
Can I save it as a wallpaper?
Yes. Download as wallpaper renders the current cracks at your screen’s physical resolution. On a computer the file downloads; on an iPhone the image opens on screen so you can press and hold it and choose Save Image.
How do I remove the broken screen?
Press Esc to leave fullscreen, or close the tab. There is nothing to repair: the cracks disappear with the page.