No Signal / TV Static
The no signal prank brings back the classic TV noise — grainy static and SMPTE colour bars flashing "NO SIGNAL". Best deployed on a smart TV, a laptop plugged into the family telly, or any big screen you can set running and leave alone.
It lands because the first instinct is never "someone's pranked me" — it's to blame the aerial, the HDMI cable or the box. You get to watch a full round of cable-wiggling before anyone suspects a browser tab. Want the screen to look dead instead of disconnected? Use the fake shutdown screen. Want it to look broken? The blue screen of death does that job.
SIGNAL
Press F11 for maximum realism. Tap or press Esc to exit.
Add the prank to their home screen and it runs like a real app — no browser bar, no tabs, no URL, nothing to give it away.
How to use the no signal / tv static prank
- Tap Launch Full-Screen Prank above (or press F11 once it's running).
- Leave the device where your victim will find it. It'll look completely real.
- When they panic, tap the screen or press Esc to reveal it was a joke.
For laughs only. Nothing here installs, downloads or damages anything — it's all harmless CSS/JS in the browser. It's a staple of April Fools' Day pranks and works any day of the year. Just keep it kind — see what makes a good prank.
Frequently asked questions
Is anything wrong with the TV?
No — it's a full-screen web animation of TV static with a "no signal" banner. The television, the cable and the box are all fine. Close the tab and the picture comes straight back.
What are the colour bars for?
They're SMPTE test bars, the broadcast standard used to calibrate colour and check a feed. You've seen them your whole life as the "the signal's gone" screen, which is exactly why they read as authentic here. Ours are decoration only — they aren't calibrated for real use.
How do I get it onto the TV?
Open the page on a laptop and connect over HDMI, or cast the browser tab from a phone. On a smart TV with its own browser you can load the page directly, which is the cleanest option because there's no source to switch back to.
Why is static so convincing?
Because analogue snow is the sound and look of genuine signal loss, and it's hardwired into anyone who grew up with aerial TV. Modern digital sets usually show a tidy blue box instead, so the old-fashioned noise reads as "something is properly broken".
Will it damage the screen?
No. It's a moving image, not a static one, so there's no burn-in risk even on OLED — the constantly changing noise is close to the opposite of a fixed logo sitting in one place.
Can I use it as a video or stream effect?
Yes. Go fullscreen and screen-capture the tab in OBS for a signal-loss transition, or point a camera at the screen for a practical shot. It loops indefinitely, so you can grab as much footage as you need.
How do I stop it?
Press Esc or close the tab. If you cast it to a TV, stopping the cast ends it — the set returns to whatever input it was on before.
I just want a plain black screen for the TV, not the static — where is that?
That's a separate tool — see our plain Black Screen, useful for OLED battery saving and backlight-bleed checks.