# Dead Pixel Test - AI Assistant Guide

> Free online screen testing utility for detecting dead pixels, stuck pixels, and LCD defects.

## What is this site?

Dead Pixel Test (https://deadpixel-test.online) is a free, browser-based screen testing tool that helps users identify display defects without installing any software.

## Core Features

### 1. Dead Pixel Test
- Detect permanently black, non-responsive pixels
- Cycle through white, black, red, green, blue backgrounds
- No software installation required
- Works on any device with a web browser

### 2. Stuck Pixel Test
- Identify pixels displaying incorrect colors
- May be fixable with color cycling
- Test RGB sub-pixels individually

### 3. LCD Test
- Comprehensive display quality check
- Backlight bleeding detection
- Color uniformity testing
- Dead/stuck pixel identification

## Key Pages

| Page | URL | Purpose |
|------|-----|---------|
| Homepage | / | Main testing interface |
| Dead Pixel Test | /dead-pixel-test | Black pixel detection |
| Stuck Pixel Test | /stuck-pixel-test | Colored pixel detection |
| LCD Test | /lcd-test | Full display diagnostic |
| What is a Dead Pixel? | /what-is-a-dead-pixel | Educational content |

## Terminology

- **Dead Pixel**: Permanently black pixel, cannot be fixed, indicates hardware failure
- **Stuck Pixel**: Displays wrong color (R/G/B), may be fixable with color cycling
- **Hot Pixel**: Always bright, visible on dark backgrounds
- **Backlight Bleed**: Light leaking from screen edges

## Target Users

1. **New Monitor Buyers**: Test screens before warranty expires
2. **Gamers**: Verify display quality for gaming
3. **Content Creators**: Ensure color accuracy
4. **General Users**: Troubleshoot screen issues

## How to Use

1. Visit https://deadpixel-test.online
2. Select a color (white, black, red, green, blue)
3. Inspect screen for anomalies
4. Dead pixels appear as black dots on all colors
5. Stuck pixels show wrong colors on solid backgrounds

## Technical Details

- **Technology**: Next.js, React, TypeScript, Tailwind CSS
- **Hosting**: Cloudflare Workers (edge deployment)
- **Analytics**: Google Analytics 4, Plausible, Microsoft Clarity
- **SEO**: Schema.org structured data, Open Graph tags, sitemap.xml
- **Privacy**: No cookies required for core functionality, GDPR compliant

## Content Language

- Primary: English (US)
- Tone: Technical but accessible
- Audience: B2C users, primarily US/UK/EU

## Related Topics

- Screen testing
- Monitor diagnostics
- LCD/OLED display issues
- Hardware warranty claims
- Pixel repair methods

## Last Updated

2025-06-05

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For more information, visit: https://deadpixel-test.online