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Screen Master - Dead Pixel Tester

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Overview

A simple screen tester for detecting dead pixels and display issues

itle: The Ultimate Screen Health Check & Dead Pixel Tester Did you just buy a new monitor? Don't let defects go unnoticed! Screen Master is a professional, lightweight tool designed to detect dead pixels, stuck pixels, and backlight bleeding on your LCD, LED, OLED, or 4K monitors instantly. Unlike simple color cyclers, Screen Master includes a Smart Analysis Engine that generates a professional quality report based on your findings, offering maintenance tips to keep your display in top condition. 🔥 Key Features: 🎚 Full-Spectrum Test Patterns: Cycle through Red, Green, Blue, White, and Black to spot dead/stuck pixels easily. 💡 Backlight Bleeding Test: Dedicated dark mode to check for IPS glow and panel leakage. 🀖 Smart Quality Report: Found an issue? Input your observations, and our engine will generate a professional assessment report with a health score. 🛡 Maintenance Tips: Get expert advice on how to clean and protect your screen based on its condition. ⚡ Instant & Lightweight: No heavy installation, runs in full screen with a single click. 🔒 Privacy First: We do not collect any personal data. Everything runs locally in your browser. Who is this for? Gamers checking high-refresh-rate (144Hz/240Hz) monitors. Designers ensuring color accuracy and panel uniformity. Anyone who bought a second-hand laptop or display. How to use: Click the extension icon. Select "Auto Test" or "Manual Mode". Look for dots that don't change color (dead pixels). Generate your screen health report at the end! Keywords for search: dead pixel test, monitor calibration, screen tester, stuck pixel fixer, backlight bleed check, LCD test, OLED burn-in check, display diagnostic tool, 4K monitor test.

Details

  • Version
    1.0.0
  • Updated
    February 20, 2026
  • Size
    20.44KiB
  • Languages
    English (United States)
  • Developer
    Tong Gu la
    朝晖路31号 新北垂, 台湟 235056 CN
    Website
    Email
    lihuashanlunjian@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

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