You just unpacked a display
Inspect pixels, uneven shading, and retained shapes. Confirm each observation yourself; a timer cannot pass the screen.
Run the quick checkupCompare · Observe · Record
Find what changes on your screen
Start with a symptom, compare one change, and keep a record you can explain. Use the patterns below, then bring your observations, settings, and photos together in a private support report.
No install or account. Saved observations stay in this browser; you choose what to export.
Not sure where to begin?
Start with the job you need to finish, not a technical term.
You are not sure what the mark means
Try the illustrated comparison: does a mark move with the content, or stay at one screen position?
Learn to separate the twoYou need a record for support
Organize repeatable observations, settings, and photos into a report you control.
Build a defect reportCommon display problems
What are you seeing?
Choose a comparison that can change your next step. You do not need to complete every test.
A dot stays in one place
Change solid colors, then move the content. Record the location and backgrounds that reveal the point.
Compare colors and positionA corner glows in dark scenes
Compare the centered view with a small change in head position at the same brightness. Check ordinary content too.
Compare position and lightingLetters are soft or have colored edges
Keep one text reference fixed while changing app, zoom, or scale. Find which change actually follows the blur.
Compare the same textMoving objects leave a trail
Keep pattern speed and refresh rate fixed while comparing overdrive settings. Record a dark trail, bright halo, or blur.
Compare motion settingsAn old shape remains visible
Look on plain backgrounds and then normal content. Record where the shape persists without calling it permanent.
Compare plain backgroundsA smooth shade breaks into bands
Compare the same gradient and direction before changing one display setting. Note where the steps remain visible.
Compare a controlled gradientAll 20 screen checks and references
For a specific setup question, choose a tool below. The inspection guide explains how to compare and interpret a finding.
HDR and color behavior
HDR Capability Check
Check browser HDR capability, verify your setup, and optionally compare SDR patterns.
Gradient Banding Test
Look for visible steps or posterization in smooth gradients.
Gamma Test
Compare browser gamma patterns before changing display settings.
Black and White Detail Check
Inspect shadow detail, highlight detail, and visible clipping.
Color Temperature Test
Compare warm, neutral, and cool browser-rendered white references.
Pixels, uniformity, and panel defects
Dead Pixel Test
Use solid colors to locate pixels that remain dark, bright, or fixed.
Touch Screen Test
Trace the display to reveal areas where pointer input repeatedly drops out.
Uniformity Test
Compare visible brightness and color consistency across the panel.
Burn-in Test
Inspect solid colors and patterns for retention-like artifacts.
Backlight Bleed Test
Observe edge light and corner glow on a dark fullscreen pattern.
Viewing Angle Test
Observe color and contrast changes from off-center positions.
Motion, frame timing, and interaction
Response Time Test
Look for ghosting, overshoot, and motion blur in moving patterns.
Refresh Rate Test
Record browser frame cadence and compare it with the configured refresh rate.
Frame Skipping Test
Photograph a numbered sequence and check whether the same gap repeats.
Browser Reaction Time Check
Compare browser reaction timing across repeated pointer or keyboard trials.
Flicker Test
Use a phone camera to compare visible bands or pulsing.
Text and viewing comfort
Screen information and multi-display setup
Method and privacy
Read the result at the right level
A test can show a repeatable visual pattern, a browser-reported capability, or browser frame timing. Use it to describe what changes by color, mode, input, or viewing position.
It cannot isolate every part of the signal chain or measure luminance, color accuracy, panel response, or display-only input lag. Those jobs need suitable instruments and a controlled method.
Saved test and quick-check history uses browser storage on this device. Report-builder inputs and selected photos stay only in the current page session and disappear on reload unless you export a report.
Practical guides
Turn an observation into a next step
How to Test Your Monitor
A practical order for checking a display at home.
Dead Pixel Warranty Guide
What to record before reviewing current return or warranty terms.
Gaming Monitor Settings
A measured approach to refresh rate, overdrive, HDR, and sync settings.
Troubleshoot Blurry Text
Find whether the difference follows an app, scale setting, or display path.