Dead Pixel Inspection
Cycle clean solid fields to find bright, dark, or stuck pixels before they become a surprise.
Screen Tester Online: Dead Pixel & Monitor Test
Run a free monitor test for dead pixels, stuck pixels, color accuracy, gradients, banding, ghosting and screen uniformity on any display.
How to Run a Screen Test
Use Left / Up to go back, and Right / Down or Space to continue.
Move the pointer to the bottom edge during a fullscreen check to reveal the controls.
When the final pattern is reached, the next action closes the test view.
Select any pattern to open it fullscreen.
Display Information
Screen Resolution-- × --
Device Pixel Ratio1.0
Color Depth24 bit
Pixel Depth24 bit
Solid Color Test
Inspect pixels, bright spots, and panel uniformity
Gradient Test
Review banding, gamma, and smooth transitions
Pattern Test
Check geometry, sharpness, and pixel alignment
Features
Practical display checks for clean color fields, fast comparisons, motion review, and a calm fullscreen workflow.
Resolution Readiness
Use native-size patterns to confirm that a monitor, phone, or television is displaying its full detail.
Fullscreen Review
Open any pattern in a distraction-free view and compare the entire panel in one glance.
Use Cases
One set of patterns for buying, setting up, editing on, and enjoying a display.
New Monitor Check
PopularRun a quick pixel and uniformity sweep before accepting a new monitor or television.
Phone and Tablet Review
Use clean color fields to inspect a mobile display for uneven brightness, tint, or damage.
Color-Critical Work
ProDesigners and editors can compare channels, ramps, and neutral grays before a color-sensitive session.
Video and Game Playback
Use motion patterns to spot response trails, judder, and distracting artifacts before playback.
Frequently Asked Questions
Short answers for getting a reliable result from your display check.
What can I inspect with Screen Tester?
You can review pixel defects, color output, neutral gray uniformity, gradients, geometry, text sharpness, and moving patterns from one page.
Does the tester change my display settings?
No. Every pattern is rendered locally in your browser. The tester does not upload images, read your panel, or change operating-system settings.
How should I prepare for a display check?
Let the display warm up, turn off adaptive brightness, use the panel's native resolution, and inspect the solid fields in a comfortable room.
Can I use these patterns on a phone or television?
Yes. The page works on modern phones, tablets, monitors, and televisions. Open a pattern in fullscreen and view it at the device's native resolution.