Screen Display & Dead Pixel Checker
Check screen refresh rate (Hz), detect dead pixels with fullscreen color cycles, and test contrast gradient banding.
Screen Display & Dead Pixel Checker on ApexTools is a free, privacy-first online utility. All computations and file transformations process locally or within private auto-purged memory with zero sign-up.
Screen Display & Dead Pixel Checker
Check screen refresh rate (Hz), detect dead pixels with fullscreen color cycles, and test contrast gradient banding.
🔒 100% In-Browser Hardware Diagnostic
Zero camera frames, microphone audio, keystrokes, or gamepad telemetry are transmitted to any server. Diagnostics run entirely inside your browser's local sandbox.
60 Hz Standard Desktop
Jitter: ±0.15ms
Scale: 1x | 24-bit
0 Dropped Frames
Find Stuck & Dead Pixels in Pure Fullscreen
Launches an edge-to-edge solid color field with zero UI elements to detect defective subpixels, backlight bleed, and OLED burn-in with maximum visual contrast.
Test Color Sequence & Fault Targets
Click any color below to preview its specific diagnostic purpose:
A dead pixel is completely unpowered and will show as a tiny black square on pure white and bright primary backgrounds.
A stuck pixel has one or more subpixels stuck in the ON state. It shows up as a bright red, green, or blue dot against pure black.
Best observed on 50% gray and black in a dim room. Uneven bright patches at screen corners indicate backlight bleed.
How to Convert with Screen Display & Dead Pixel Checker
Follow these 3 simple steps to complete your conversion in seconds.
Enter Input Value or Data
Input your value or paste text into the input field for Screen Display & Dead Pixel Checker.
Adjust Settings or Units
Select desired output format, decimal precision, or transformation flags.
Copy or Save Output
The result is calculated instantly. Click Copy or Download to save your converted result.
Frequently Asked Questions
Common questions and answers about Screen Display & Dead Pixel Checker.