Fake Lock Screen Generator

Display a realistic Windows, macOS, ChromeOS or Linux lock screen with custom username and wallpaper. Fake password rejection animation, live clock, full-screen prank mode. Free in your browser, ESC to exit any time.

Lock Screen Settings

Operating System Style

Wallpaper

Your photo stays on this device - not included in share links.

User Identity

Username

Avatar Emoji

Prank Options

Fullscreen on StartFills the whole screen when you press Lock Screen Fake Password RejectionField shakes and shows "Incorrect password" Live ClockShow real-time clock and date "Just Kidding" RevealFriendly reveal screen on exit Hold ESC to ExitRequire holding ESC for 1 second

Start Delay and Clock

Delay before the lock screen appears

Clock format

Tips for Best Results

Match the OS style to the actual computer for realism
Use the target's real name for maximum effect
On phones, tap the screen to show the Exit button
Press Esc to exit the lock screen
Schedule a delay to step away first
Click Share Link to send your prank setup

6 OS Styles

Windows 10, 11, macOS Big Sur, Ventura, ChromeOS, Linux GDM

12 Wallpapers + Yours

Bliss, Mountain, Ocean, Aurora and more, or your own photo

100% Safe

No real lock, no input captured, ESC always exits

This is a free, browser-based fake lock screen prank tool that displays a convincing Windows, macOS, ChromeOS or Linux login screen with custom username, avatar emoji and wallpaper. The clock updates in real time, and when someone types into the password field, the prank shakes the input and shows an "Incorrect password" message - exactly like the real thing.

Six operating system styles are included: Windows 11, Windows 10, macOS Ventura, macOS Big Sur, ChromeOS, and Linux GDM (Ubuntu/GNOME). Each uses authentic typography, button shapes, blur effects and color palettes to match what real users expect.

Press Esc at any time to exit. Nothing is actually locked, nothing is installed, and any text typed into the fake password field is discarded - never saved or transmitted.

1. Pick an OS style - Match the lock screen to the operating system actually running on the computer for maximum realism.

2. Choose a wallpaper - 12 preset gradients matching common stock wallpapers, plus solid colors. Or tap Upload your own to use one of your photos - it is resized in your browser and stays on this device.

3. Set the username and avatar - Use the target's real name and pick an emoji that matches their actual profile picture.

4. Toggle prank options - Keep Fullscreen on Start switched on, then enable the fake password rejection (recommended), the live clock, the "Just Kidding" reveal, and hold-ESC-to-exit safety.

5. Schedule the start delay - Set 10-30 seconds so you can step away before the lock kicks in.

6. Lock the screen - Click Lock Screen and it fills the whole screen. Press Esc when the joke is over, or tap the screen and then Exit on a phone.

Office Pranks

"Lock" a coworker's screen while they grab coffee.

April Fools'

A classic that never fails when paired with their real name.

YouTube Skits

Realistic lock screens for tech-themed comedy videos.

Film Production

Quick screen overlays for scenes that need a believable lock.

Mockup Screenshots

Generate believable lock screen mockups for blog posts.

UX Design Demos

Compare lock screen patterns across operating systems.

Is this fake lock screen safe?

Yes. The tool only displays a fake lock screen inside your browser tab. It does not actually lock the computer, change settings, or capture any input. Press Esc to exit.

Can it actually lock the computer?

No. This is purely a visual prank - the screen looks locked but the computer is not. Esc always exits. Use only with people who can take a joke.

Does it capture passwords?

No. Whatever someone types into the fake password field is intercepted by the prank, immediately replaced with dots, and discarded. Nothing is saved or transmitted anywhere.

How do I exit the lock screen?

Press the Esc key once. On a phone or tablet, tap the screen to show the Exit button in a corner of the screen and tap it. If "Hold ESC to Exit" is enabled, hold ESC (or hold the Exit button) for one second.

Can I customize the username and avatar?

Yes. Set any username, pick an emoji avatar, and choose a preset wallpaper, a solid color or your own photo. Your photo is resized and kept on this device only - it is never uploaded and it is not included in share links. The clock shows live time.

Does it work on phones and tablets?

Yes. The tool runs on iOS Safari, Android Chrome, and any modern mobile browser. Tap the password field to bring up the keyboard, and tap anywhere else to show the Exit button. On iPhone the Safari bar stays visible, because iOS does not let web pages go fullscreen.

Will the password reject animation be realistic?

Yes. After the user types and presses Enter, the fake field shakes, shows an "Incorrect password" error, and clears - just like the real lock screens it imitates.

Can I share my prank settings?

Yes. Click the Share Link button to copy a URL containing all your current settings. Anyone who opens the link sees the same configuration ready to start. A photo wallpaper stays on your device, so the link uses the default wallpaper instead.

Pair this with our Fake Windows Update for a stuck-update follow-up, or with the Fake Virus Scanner for a "system compromised" continuation.

Generate matching error dialogs with the Fake Error Message Generator.

Record reactions with ScreenToGif.