SCREEN 📌 Quick Summary: A fullscreen pixel test displays solid colors across your entire screen to reveal dead, stuck, or malfunctioning pixels. Our free online tool runs in fullscreen mode — no downloads, no signups, 100% private.
Pixel Test Fullscreen — Free & Online
Running a fullscreen pixel test is the best way to detect dead or stuck pixels on your screen. When the test runs in fullscreen mode, there are no distractions — just pure colors that make defects easy to spot.
Our tool automatically switches to fullscreen mode when you click "Start Full Diagnosis". Press Escape to exit at any time.
How to Run a Fullscreen Pixel Test
- Clean your screen — Remove dust and fingerprints.
- Click "Start Full Diagnosis" — The test enters fullscreen mode.
- Inspect each color — White, black, red, green, and blue.
- Press Space or click — To advance to the next color.
- Press Escape — To exit the test.
Why Fullscreen Matters
- No distractions — The entire screen is dedicated to the test.
- Better detection — Defects are easier to spot on solid colors.
- Professional standard — Used by display manufacturers worldwide.
Compatible with All Devices
Our fullscreen pixel test works on any device with a modern web browser:
- Monitors — LCD, LED, OLED, 4K, 144Hz
- Laptops — Windows, MacBook, Chromebook
- Phones — iPhone, Android, Samsung
- TVs — Smart TVs with a browser
- Tablets — iPad, Android tablets