How do I fix a stuck pixel online?

Use our free Stuck Pixel Fixer tool that rapidly cycles colors on your screen. Position the repair window over the stuck pixel, select your preferred repair mode (gentle, aggressive, or custom), and run for 5-10 minutes. The rapid color changes can help "unstick" the malfunctioning sub-pixel. Success rates are typically 60-80% for recently stuck pixels.

What is the success rate for stuck pixel repair?

Our stuck pixel repair tool has a 60-80% success rate, depending on several factors: how long the pixel has been stuck (newer issues fix more easily), the type of display (LCD panels respond best), and the underlying cause. We recommend running the fixer for at least 10 minutes, and trying multiple sessions if the first attempt doesn't work.

Can I fix dead pixels?

Unfortunately, dead pixels cannot be fixed with software tools. Dead pixels are caused by a complete hardware failure where the pixel receives no power. Our Pixel Test tool can help you determine whether you have a stuck pixel (fixable) or a dead pixel (not fixable). Stuck pixels show as colored dots, while dead pixels appear black.

Does the screen test work on phones?

Yes! ScreenDetect works on any device with a web browser, including smartphones (iPhone and Android), tablets, laptops, desktop monitors, and even smart TVs. Our tests are optimized for all screen sizes and types including LCD, LED, OLED, and AMOLED displays. Simply open our website in your mobile browser to start testing.

What is a dead pixel test and do I need one?

A dead pixel test displays solid colors across your entire screen to help identify pixels that are permanently stuck in one color (dead) or display the wrong color (stuck). You should test your screen when buying a new device, before a warranty expires, when selling or trading in, or if you notice display anomalies.

How accurate are online screen tests compared to professional tools?

Our tests use the same color patterns as professional calibration tools and are designed to reveal common display issues through visual inspection. The main difference is that professional tools may include hardware sensors, while our approach relies on what the human eye can detect. For most users identifying obvious defects like dead pixels or backlight bleed, online tests are equally effective.

What is the difference between dead pixels and stuck pixels?

Dead pixels appear as black dots and never light up, indicating a completely non-functioning pixel. Stuck pixels display a constant color (red, green, or blue) because one or more sub-pixels are permanently on. Stuck pixels can sometimes be fixed using our Stuck Pixel Fixer tool, while dead pixels are typically permanent hardware failures.

Do I need to download anything or create an account?

No downloads or account are required for testing or repairing. All tests and repair tools run directly in your web browser and guide you through the process with clear on-screen instructions.

How long does each test take?

Most tests take 30-120 seconds to complete. Dead pixel tests typically take 1-2 minutes as you cycle through different colors, while backlight bleed tests take about 30 seconds in a dark room. The Stuck Pixel Fixer repair tool should run for 5-10 minutes for best results.

What should I do if my test finds issues?

If you find defects within your warranty period, contact the manufacturer or retailer with your test results for a replacement or repair. For stuck pixels, try our free Stuck Pixel Fixer tool; it has a 60-80% success rate for recently stuck pixels. For dead pixels, document the issue and check your warranty terms.

Screen Test & Repair - Free Browser-Based Display Diagnostics

Toolkit

Testing and Repair Workflows

Start with tests to classify the issue, then move into repair tools only when the defect type supports mitigation.

Tests

3 tools

Test

Pixel Test

Detect dead, stuck, or hot pixels with comprehensive color patterns

Open Pixel Test

Test

Backlight Bleed Test

Identify light leakage and IPS glow on dark backgrounds

Open Backlight Bleed Test

Test

OLED Burn-In Test

Test your OLED screen for burn-in and image retention

Open OLED Burn-In Test

Repairs

2 tools

RepairPopular

Stuck Pixel Fixer

Attempt to revive stuck pixels using rapid color cycling

Open Stuck Pixel Fixer

Repair

Burn-In Fixer

Reduce OLED burn-in with color wash and pixel shift patterns

Open Burn-In Fixer

Featured Workflow

Stuck Pixel Fixer

Use this only after test results confirm a stuck pixel (not a dead pixel). The workflow runs controlled pattern cycles intended to restore subpixel responsiveness.

Targets recently stuck subpixels with color-cycling sequences
Designed for browser use on laptops, monitors, tablets, and phones
Best used after confirming defect type in Pixel Test

Open Stuck Pixel Fixer Run Pixel Test First

Classification Guide

Stuck vs Dead Pixel

Correct classification determines whether you should run a repair workflow or move straight to warranty documentation.

Stuck Pixel

Software-mitigable

Subpixel channel is locked in a color state. May respond to guided repair patterns.

Appears colored on contrasting backgrounds
May change behavior over time
Worth attempting repair

Open Stuck Pixel Fixer

Dead Pixel

Hardware failure

Pixel remains non-responsive and dark across all test states. Software repair is typically ineffective.

Appears black on all backgrounds
No color response during tests
Document for warranty/replacement

Run Pixel Test

Process

How It Works

A test-first workflow keeps decisions fast, explainable, and evidence-backed.

Step

01

Run Tests

Input: Choose a test based on symptom or lifecycle stage.

Output: Defect class identified (pixel, bleed, retention).

Step

02

Interpret Results

Input: Compare defect behavior across controlled test states.

Output: Decide: repair workflow vs warranty/escalation path.

Step

03

Take Action

Input: Execute repair if appropriate or compile evidence pack.

Output: Clear next step with documented decision trail.

Lifecycle Use Cases

When to Use ScreenDetect

Run diagnostics at key moments where display decisions affect return outcomes, warranty claims, and resale value.

Reduce risk with documented screen checks at intake, pre-expiration, pre-listing, and symptom onset.

Returns & Exchange Window

Use Case

New device intake

Establish a clean baseline before return and exchange windows tighten.

Phones, laptops, OLED TVs

Coverage Expiration

Use Case

Warranty checkpoint

Revalidate display integrity before manufacturer or retailer coverage expires.

In-warranty displays

Resale Documentation

Use Case

Resale preparation

Document panel condition to reduce buyer disputes and price renegotiation.

Marketplaces and trade-ins

Issue Verification

Use Case

Symptom triage

Classify suspicious spots, glow, retention, or burn-in symptoms quickly.

LCD, LED, OLED, AMOLED

Why ScreenDetect

Built for Practical Display Decisions

The platform is designed for clear test results, realistic remediation paths, and faster support outcomes.

01

Fast first-pass testing

Most tests complete in under two minutes and provide immediate visual classification.

02

Cross-device compatibility

Workflows run in modern browsers on laptops, monitors, tablets, and phones.

03

Actionable output

Results map directly to next steps: repair workflow, warranty escalation, or monitoring.

04

Evidence-ready process

Structured test states make screenshots and support communication more consistent.

Knowledge Base

Understand the Methods

Use these links to learn the logic behind testing, result interpretation, and realistic repair expectations.

Tests

3 tools

Run tests first to classify what is actually happening on the panel. This gives you a clean baseline before deciding whether repair is appropriate.

Pixel Test

Run full-screen color passes to spot dead, stuck, or unstable pixels. Use it to confirm defect behavior before trying any repair workflow.

Open Pixel Test

Backlight Bleed Test

Evaluate panel glow, edge bleed, and corner pressure artifacts under controlled dark-screen conditions. It helps separate normal panel variance from true bleed issues.

Open Backlight Bleed Test

Burn-In Test

Check for uneven wear, ghosting, and persistent image artifacts on OLED displays. Use this to distinguish temporary retention from likely permanent burn-in.

Open Burn-In Test

Repairs

2 tools

Use repair tools only after testing confirms a defect type that can respond to software intervention. Follow session guidance to avoid overcorrecting and to evaluate results safely.

Stuck Pixel Fixer

Cycle targeted color patterns to try restoring non-responsive sub-pixels. Use short sessions first and re-test results between attempts.

Open Stuck Pixel Fixer

Burn-In Fixer

Run mitigation cycles designed to reduce mild retention visibility on OLED panels. It sets realistic expectations and guides safe session pacing.

Open Burn-In Fixer

Frequently Asked Questions

Practical answers on testing method, repair expectations, and choosing the right workflow.

Need help?

Still have questions?

Contact our support team→

Ready to Start

Test First, Then Repair With Confidence

Run a quick test baseline, classify the issue, and choose the right next action without guesswork.

Start Tests Explore Repairs

Find and FixScreen Problems

Tests

Pixel Test

Backlight Bleed Test

OLED Burn-In Test

Repairs

Stuck Pixel Fixer

Burn-In Fixer

Stuck Pixel Fixer

Stuck Pixel

Dead Pixel

Run Tests

Interpret Results

Take Action

New device intake

Warranty checkpoint

Resale preparation

Symptom triage

Fast first-pass testing

Cross-device compatibility

Actionable output

Evidence-ready process

Tests

Pixel Test

Backlight Bleed Test

Burn-In Test

Repairs

Stuck Pixel Fixer

Burn-In Fixer

Frequently Asked Questions

How do I fix a stuck pixel online?

What is the success rate for stuck pixel repair?

Can I fix dead pixels?

Does the screen test work on phones?

What is a dead pixel test and do I need one?

How accurate are online screen tests compared to professional tools?

What is the difference between dead pixels and stuck pixels?

Do I need to download anything or create an account?

How long does each test take?

What should I do if my test finds issues?

Test First, Then Repair With Confidence

Find and Fix
Screen Problems