Luminozitate 100%
Mod cronometru

Setați un cronometru pentru afișare pe tot ecranul.

Ecran albastru fundal

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Culoare personalizată
Opens one color window per detected screen. Drag & fullscreen each.
Free & Browser-Based

Free Online Screen Savers – No Download Required

Transform your display with beautiful, interactive screensavers that run right in your browser. Choose from digital clocks, productivity timers, ambient animations, and mesmerizing visual effects — perfect for idle screens, desk displays, presentations, and relaxation.

Free Prank Tool

Fake Update Screens – Free Online Prank Tools

Realistic fullscreen prank screens — BSOD, Windows updates, Ubuntu upgrades, iOS updates, and hacker terminals. Launch any screen fullscreen and watch your friends panic. Press ESC to exit anytime.

Instrumente de testare a ecranului

Ciclu automat de culori

Ciclați rapid culorile pentru a repara pixelii blocați. Rulați 20-30 minute.

Test ardere OLED

Afișați un model în mișcare pentru a detecta arderea OLED.

Test de gradient

Gradienți netezi pentru verificarea benzilor de culoare și adâncimii biților.

Test tablă de șah

Modele de tablă de șah pentru testarea clarității și răspunsului pixelilor.

Test timp de răspuns pixel

Tranziții rapide alb/negru pentru evaluarea fantomelor.

Test unghi de vizualizare

Benzi de culoare pentru evaluarea consistenței unghiului de vizualizare.

Test uniformitate gri

Gri 50% pentru a dezvălui punctele fierbinți ale iluminării de fundal.

Verificator acuratețe culori

Culori de referință pentru verificarea calibrării.

Detectare multi-monitor

Detectați ecranele conectate și deschideți culoarea pe tot ecranul.

Drag each window to a different monitor, then click Go Fullscreen inside it.
Detected Screens
Click "Refresh" to detect…

Despre Ecran albastru

A blue screen isolates the blue sub-pixel channel for precise display testing. Blue sub-pixels are typically the smallest and dimmest in most LCD panel technologies, making them the most common source of sub-pixel defects. Testing with pure blue can reveal issues that other colors miss.\n\nBlue light is also important to understand for eye health. Extended exposure to blue light from screens can contribute to digital eye strain and may affect sleep patterns by suppressing melatonin. Testing your monitor's blue output can help you calibrate night mode or blue light filter settings.\n\nFor creative professionals, a blue screen provides cool-toned ambient lighting for photography and video production. It creates a calm, professional atmosphere often used in corporate video backgrounds and product photography.\n\nDisplay calibration experts use blue screens as part of color accuracy testing, comparing the displayed blue against reference values to verify proper color rendering across the sRGB and Adobe RGB color spaces.

Întrebări frecvente – Ecran albastru

Blue sub-pixels are typically smaller and require more power in LCD panels. This makes them more prone to failure compared to red and green sub-pixels.

All screens emit blue light. This tool displays pure blue to test your display. For daily use, enable your OS night mode to reduce blue light in the evening.

Yes. Display calibration involves checking pure red, green, and blue channels. This blue screen helps verify your monitor's blue accuracy against reference values.

Pure sRGB blue (#0000FF) corresponds to approximately 450-490nm wavelength, which is in the blue portion of the visible spectrum.