Dead Pixel Test
Check black dots, stuck subpixels, hot pixels, and localized display defects with clean browser patterns.
Run the dead pixel testBrowser-based screen tools
Online Screen Tests and Guides for Display Problems
Check pixels, touch issues, backlight bleed, burn-in, and visible screen damage in your browser — then choose whether to retest, try a repair tool, document, back up, return, or repair.
No download. No account. Built to help you read the result before the next step.
Browser tools available now
Online Screen Tests and Repair Tools
Start with a browser-based screen test for pixels, touch response, backlight bleed, burn-in, or color patterns. If the result points to a recoverable issue, use a repair tool with clear limits and next steps.
Screen tests
Choose the test that matches the visible screen issue first.
Backlight Bleed Test
Use a dark-room screen test to compare edge glow, cloudy patches, IPS glow, and uneven black levels.
Open the backlight bleed testBurn-In Test
Look for image retention, OLED burn-in, and persistent interface marks across neutral test screens.
Start the burn-in testTouch Screen Test
Trace touch response, dead zones, missed input, drifting taps, and multi-touch behavior directly in the browser.
Run the touch screen testScreen Color Test
Launch white, black, gray, red, green, and blue fullscreen patterns before choosing a more specific test.
Open the screen color testAll Screen Tests
Compare browser-based screen tests for phones, tablets, laptops, monitors, and other displays.
Compare all screen testsRepair tools
Use repair tools only when the screen result fits a software-recoverable pattern.
Stuck Pixel Fixer
Run a controlled color-cycling repair attempt for pixels that still light up but appear stuck on one color.
Try the stuck pixel fixerBurn-In Fixer
Use a cautious browser-based mitigation tool for mild image retention and OLED persistence cases.
Open the burn-in fixerScreen Repair Paths
Compare when to retest, try software repair, document the result, return the device, or plan a hardware repair.
Compare screen repair pathsScreen damage guide
Start With the Screen Problem You Can See
Use ScreenDetect damage guides when a mark, line, touch issue, spill, pressure event, or heat exposure makes the problem feel physical or unstable. Start by symptom, cause, or access and evidence.
By symptom
Start with the visible pattern when it is clearer than the cause.
Dark spots and bruises
Use this when the screen shows a black spot, dark patch, spreading bruise, or ink-like mark.
Open dark spots guideLines after pressure
Use this when vertical or horizontal lines appeared after a squeeze, twist, lid event, or flex.
Open lines guideGhost touch
Use this when the screen taps by itself, opens things, types randomly, or becomes hard to control.
Open ghost touch guideTouch dead zones
Use this when part of the touchscreen stops responding after damage, pressure, moisture, or a drop.
Open touch dead zones guideBy cause
Start with the event history when pressure, liquid, or heat came first.
Pressure damage
Compare marks, lines, and touch issues that begin after bag pressure, bending, or closed-lid stress.
Open pressure damage guideWater damage
Use this after spills, rain, condensation, steam, or delayed screen changes after moisture exposure.
Open water damage guideHeat damage
Use this after direct sun, hot-car exposure, charger hotspots, or repeated thermal stress.
Open heat damage guideAccess and evidence
Protect data, keep working, or capture proof before the screen changes further.
Back up a broken phone
Use this when the phone still powers on but visibility, touch control, or unlock access may get worse.
Open phone backup guideDocument damage for warranty
Capture useful photos, timing, and screen evidence before a return, warranty, or insurance conversation.
Open documentation guideUse an external monitor
Keep using a laptop when the built-in screen is cracked, dim, lined, or no longer reliable.
Open external monitor guideDevice screen profiles
Find Device Screen Profiles
Search the ScreenDetect device directory, narrow by device class, and open the exact screen profile you need without paging through grouped sections.
Browse device directory