No Signal TV Screen
Make your friends think the TV lost signal! Display the iconic colorful test pattern with "NO SIGNAL" text and realistic CRT scanline animation.
NO SIGNAL

📡 No Signal Test Pattern Simulator

Blast any screen back to the broadcast era with vivid SMPTE color bars, glitchy scanlines, and bold “NO SIGNAL” overlays.

🎨 Studio-Grade Recreation

The color stripes, PLUGE bars, and alignment grids match genuine test cards.

The pattern includes luminance stripes, audio reference tone indicators, and rotating labels. Scanlines gently drift, while a faint CRT curvature gives the image depth. Toggle between multiple standards: SMPTE, EBU, Philips PM5544, or custom corporate palettes.

🎚️

Mode Switcher

Swap between color bars, grayscale ramps, and geometry grids.

🔊

Reference Tone

Enable a steady 1 kHz sine wave—instant broadcast authenticity.

📺

CRT Filters

Add phosphor glow, noise, and horizontal jitter with a single toggle.

📝

Custom Text

Replace “NO SIGNAL” with “Please Stand By,” “Broadcast Paused,” or inside jokes.

🎯 Where It Shines

🎉

Parties

Display it on projectors before a DJ set; everyone thinks the venue’s AV team is prepping.

🎬

Film Shoots

Use it for establishing shots or to cover real monitors during downtime.

📺

Living Rooms

Turn on the test pattern when roommates monopolize the TV.

🧑‍🏫

Media Classes

Teach broadcasting history with an accurate interactive reference.

🚀 Step-By-Step Prank

1

Open Fullscreen

Enable F11 to hide browser UI and mimic a native HDMI signal.

2

Unplug Audio

Route the reference tone through speakers so the room hears the iconic beep.

3

Add Flicker

Toggle glitch mode briefly so people think the satellite feed died.

4

Make An Announcement

Calmly say, “We’re experiencing technical difficulties,” to sell it.

5

Return To Program

Fade back to the show and bask in the applause (or groans).

🧠 Trivia Injection

Test patterns were calibration tools. Engineers used them to align color guns, check audio channels, and ensure transmitters were live. By recreating them precisely, you get instant credibility.

🧾 Tips

  • Dim The Lights: The pattern glows better in darker rooms.
  • Combine With Static: Alternate between noise and color bars for full broadcast meltdown.
  • Add Lower Thirds: Overlay fake news tickers for comedic effect.
  • Record Footage: Perfect for music videos or glitch art reels.

📼 History Spotlight

Share trivia as the bars glow: why engineers used PLUGE strips, how midnight sign-offs worked, or why the high-pitched tone sat at 1 kHz. Friends suddenly feel like they’re inside a late-night broadcast lab.

🎲 Signal Bingo

Create bingo cards with events like “Somebody checks HDMI cable,” “Someone hums the tone,” “Viewer takes photo.” First person to fill a row wins bragging rights.

🎓 Educator Toolkit

Turn the pattern into a mini lesson: explain how test cards ensure color accuracy, then invite students to adjust camera white balance using the live display. Pair it with worksheets where they sketch the layout from memory—great for media literacy units.

📸 Photo Booth Hack

Set up a tripod in front of the screen and let guests pose as if they’re starring in a glitchy music video. Encourage props like vintage camcorders or headset mics. The resulting photos look like album covers, and everyone remembers the “technical difficulty lounge.”

🎛️ Director’s Console

Place a folding table with sliders labeled “Hue,” “Contrast,” and “Signal Strength.” Let visitors pretend they’re broadcast engineers trying to stabilize the feed. Every tweak corresponds to actual on-screen controls, teaching color theory disguised as mischief.

🎬 Broadcast Rehearsal

Write a short “breaking news” script and rehearse it in front of the test pattern. One person plays the anchor apologizing for technical issues, another plays the studio engineer shouting status updates, and a third pretends to be the network executive calling from a rotary phone prop. The pattern becomes a theatrical backdrop, not just a static image.

  • Emergency Scroll: Tape paper to the bottom of the TV with hand-drawn headlines (“Please Stand By While We Replace A Cable”). Move it manually for analog vibes.
  • Camera Shake: Lightly bump the tripod during the performance to imitate earthquake coverage.

🧪 Color Science Corner

Set up paint chips or RGB LED strips that match each bar. Challenge friends to mix paints or dial LED values until they match the screen. Explain why each bar exists (luminance sweeps, skin tone references, chroma bursts) so the prank doubles as a hands-on calibration workshop.

🖼️ Gallery Hanging

Frame still images of different test patterns and hang them around the activation. As the live screen flickers, visitors compare the printed references and learn how each broadcaster customized their card.

📱 Social Sharing Station

Set up a ring light and encourage people to record “technical difficulty” TikToks. Provide cue cards with sample scripts so even shy guests can riff about the phantom outage.

🛰️ Control Room Script

  1. Alert: Someone shouts “Feed dropped!” and presses a klaxon button on their phone.
  2. Diagnosis: Another person peers behind the TV with a flashlight, narrating imaginary cable swaps.
  3. Public Statement: A third person steps forward with cue cards quoting classic “Please stand by” messaging.
  4. Hero Moment: A volunteer pretends to reroute satellites by tapping the keyboard dramatically.
  5. Credits: Once the prank ends, everyone bows as if they just finished a live sketch.

📘 Maintenance Log

Keep a clipboard noting fake interventions: swapped coax cables, rebooted uplink dish, appeased gremlins with snacks. Reading the log at the end becomes part of the punchline.

📝 Signal Hunter Journal

Print graph paper sheets with columns for “Time,” “Color Shift,” “Audio Quirk,” and “Suspected Cause.” Every time the bars flicker or the tone wobbles, have someone jot a theory. Comparing notes afterward turns the prank into collaborative detective work and gives you quotable lines for social posts.

📡 Affiliate Ring

Set up a group chat titled “Station Affiliates” and have remote friends share matching photos of their own screens running the test pattern. Pretend you’re coordinating a regional outage response. Seeing the same bars in multiple locations makes the prank feel like a continent-wide broadcast hiccup.

❓ FAQ

Does it damage screens?
No. The image shifts subtly to avoid burn-in.
Can I swap text?
Yes. Type new captions in the settings panel or via DevTools.
Is there 4:3 support?
A dedicated mode adds pillarboxes and round corners for classic CRT framing.
Will it run offline?
After loading assets once, it keeps looping without internet.

📺 Friendly Reminder

Use the test pattern to entertain, not to sabotage important broadcasts. Keep the joke short, then hand control back to the actual show.

People use Pranks for:

Entertainment & Fun

Create hilarious moments with friends and family. Pull off the ultimate prank and watch their reactions unfold in real-time.

  • Surprise loved ones with harmless tricks
  • Create memorable funny moments
  • Share laughs and build connections

Workplace Humor

Break the ice at the office with light-hearted pranks. Perfect for team building and creating a fun work environment.

  • Lighten up team meetings
  • Build stronger office relationships
  • Create inside jokes and culture

Technical Demonstrations

Showcase impressive visual effects and technical knowledge. Ideal for presentations, demos, and educational purposes.

  • Display cyberpunk aesthetics
  • Demonstrate technical skills
  • Create engaging presentations

Creative Storytelling

Use pranks as part of games, stories, or creative projects. Perfect for content creators and game developers.

  • Add cinematic effects to videos
  • Enhance gaming experiences
  • Create viral moments

Party & Event Planning

Add an unexpected twist to parties and events. Create unforgettable experiences and entertainment value.

  • Surprise guests with tech effects
  • Create themed entertainment
  • Generate buzz and excitement

Learning & Experimentation

Explore web development and creative coding. Perfect for developers wanting to learn new techniques.

  • Master web technologies
  • Experiment with visual effects
  • Build interactive projects

How to Use Pranks

Follow these simple steps to pull off the perfect prank

1

Choose Your Prank

Browse our collection of pranks and select the one that matches your target's interests. From fake updates to hacker simulators, pick what fits best!

2

Open on Their Device

Open the prank on your friend's computer, phone, or tablet. You can either hand them your device or get them to open it themselves for maximum surprise.

3

Watch the Magic

Let the prank do its work! The realistic effects and authentic look will make them believe what they're seeing. Capture their reaction for the memories!

4

Reveal the Truth

Once they're sufficiently pranked, reveal that it's all fake! Press ESC or close the page to show them it was just a harmless joke. Laugh together!

5

Share the Moment

Share the prank with your friends! Whether it's a video of their reaction, a screenshot, or just telling the story - these moments make the best memories.

6

Explore More

Try different pranks! Each one offers a unique experience. Mix and match to keep things fresh and create endless entertainment.

💡 Pro Tips for Better Pranks:

  • Timing is everything - Choose the right moment when they're distracted or relaxed
  • Keep a straight face - Your poker face is part of the prank's success
  • Full screen it - Press F11 for maximum immersion (works on most pranks)
  • Know your audience - Pick pranks that match their personality and comfort level
  • Make it believable - Let them interact with it a bit before revealing the truth
  • Record responsibly - Always ask permission before sharing videos of people