Browser-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.

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Browser tools available now

Online screen tests and repair tools

Open the browser test or repair tool that matches the defect class you need to confirm, then move into repair only when retesting shows a software-recoverable pattern.

Screen tests

Open the browser test that matches the defect class you need to confirm.

View all tests

Test tool

Dead Pixel Test

What it checks
Check black dots, stuck subpixels, hot pixels, and localized display defects with clean browser patterns.

Test tool

Backlight Bleed Test

What it checks
Use a dark-room screen test to compare edge glow, cloudy patches, IPS glow, and uneven black levels.

Test tool

Burn-In Test

What it checks
Look for image retention, OLED burn-in, and persistent interface marks across neutral test screens.

Test tool

Touch Screen Test

What it checks
Run an online touch screen test for touch response, dead zones, missed input, drifting taps, and multi-touch behavior.

Test tool

Screen Color Test

What it checks
Launch white, black, gray, red, green, and blue fullscreen patterns before choosing a more specific test.

Repair tools

Use repair tools only when retesting shows a software-recoverable pattern.

View all repairs

Repair tool

Stuck Pixel Fixer

When to use
Run a controlled color-cycling repair attempt for pixels that still light up but appear stuck on one color.

Repair tool

Burn-In Fixer

When to use
Use a cautious browser-based mitigation tool for mild image retention and OLED persistence cases.

Screen 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.

View all damage guides

What you see

Screen changed after pressure, bending, or something pressing on it

Likely issue
Pressure or flex damage

What you see

Spill, rain, condensation, or other moisture exposure

Likely issue
Water or liquid damage

What you see

Screen tapping on its own or touch dead zones

Likely issue
Digitizer instability or local touch failure

What you see

You still need photos, files, or access from a damaged phone

Likely issue
Data or proof at risk

What you see

Cracked glass but unsure if the panel underneath is damaged too

Likely issue
Glass-only vs display damage

What you see

You are deciding between repair and replacement

Likely issue
Cost, age, and reliability tradeoff

Device-specific damage guides

Laptops, MacBooks, and iPads

Choose the device after you know what happened. If a laptop still runs but its built-in screen is unreliable, move to safer external-display access first.

Pressure damage

Bag pressure, a closed lid on an object, flex, or a panel bruise.

MacBook pressure damage guideLaptop pressure damage guideiPad pressure damage guide

Water damage

Liquid exposure, condensation, or screen changes that worsen in stages.

MacBook water damage guideLaptop water damage guide

Heat damage

Thermal stress, dim zones, discoloration, or a display that changed after heat.

MacBook heat damage guideLaptop heat damage guide

Other damage paths

SymptomsAll symptom guidesDark spots, lines, ghost touch, and touch dead zones.UrgentAction guidesBackup, external monitor access, and warranty evidence.DecideCan this be repaired?When a display repair is realistic versus a lost cause.DecideRepair vs replaceWeigh cost, device age, and reliability before you commit.

Device screen profiles

Find device screen profiles

Open normalized screen specs, panel context, common problems, and test routing for phones, tablets, laptops, monitors, and TVs.

Browse device directory

Dell

Alienware AW3426DW

Panel
OLED
Notes
The Alienware AW3426DW is a 34-inch 3440 × 1440 QD-OLED ultrawide built for high-frame-rate PC gaming, with a 280Hz ceiling, deep OLED blacks, and unusually strong SDR brightness for this panel class. Its main buying tradeoff is practical rather than visual: 21:9 support varies by game, reflections still matter, and laptop users do not get a one-cable USB-C setup. This profile helps you check those risks before buying.

Samsung

Samsung Odyssey OLED G8 G80SH

Panel
OLED
Notes
The 32-inch Samsung Odyssey OLED G8 G80SH pairs 4K resolution with a 240Hz QD-OLED panel, strong OLED blacks, and unusually useful desk connectivity including DP 2.1 and USB-C charging. It fits high-end PC gaming and mixed game-and-media desks best. The main buying question is whether OLED’s static-desktop burn-in risk and still-unverified comfort behavior fit your daily work habits.

ASUS

ASUS ROG Swift OLED PG27UCDM

Panel
OLED
Notes
The ASUS ROG Swift OLED PG27UCDM pairs a 26.5-inch 4K QD-OLED panel with 240Hz motion and unusually sharp desktop text for this class. It suits PC and console gaming, HDR movies, and mixed desk use where USB-C charging and KVM features matter. Its main compromise is typical QD-OLED behavior: bright-room black lift, visible reflections, variable large-area brightness, and care needed with static desktop content.

ASUS

ASUS ROG Swift OLED PG34WCDN

Panel
OLED
Notes
The ASUS ROG Swift OLED PG34WCDN is a 34-inch 3440 x 1440 ultrawide built around a 360Hz RGB-stripe QD-OLED panel. Its strongest case is fast PC gaming with unusually credible text clarity for QD-OLED, plus deep blacks and punchy HDR in a controlled room. The main buying question is whether you can live with OLED’s static-content burn-in risk and a glossy screen near windows.

Before you buy

Display decisions by device

Choose your device type for guidance shaped by its panel, coatings, sensors, curves, and daily use. Already have screen damage? Open damage routing.

View all guides

Browse by device type

iPhone decisionsPre-purchase iPhone protection and accessory decisions — protectors, cases, and add-ons before you spend.iPad decisionsPre-purchase iPad protection and accessory decisions — Pencil feel, folios, cases, and add-ons before you spend.Android Phone decisionsPre-purchase Android phone protection and accessory decisions — curved displays, sensors, cases, and add-ons before you spend.Android Tablet decisionsPre-purchase Android tablet protection and accessory decisions — stylus feel, folios, cases, and add-ons before you spend.Laptop decisionsPre-purchase laptop buying decisions — display type, finish, burn-in, privacy filters, and accessories before you buy.Monitor decisionsPre-purchase monitor buying decisions — panel types, glow vs bleed, burn-in, and defect thresholds before you buy.

Popular topics

GuideiPhone screen protector guideCeramic Shield, Face ID, and coating tradeoffs before you buy.GuideAndroid fingerprint sensor compatibilityHow curved glass and sensor placement change protector choice.GuideIPS glow vs backlight bleedSeparate angle-based glow from fixed edge bleed on monitors.GuideLaptop screen types explainedGlossy vs matte, OLED laptops, and what changes repair risk.

FAQ

ScreenDetect FAQs

Answers on tests, damage routing, repair limits, and what browser workflows can prove.