Device Test Online icon
Device Test Online icon

Device Test Online

Free, privacy-first hardware diagnostic suite. Test monitors, microphones, keyboards, mice, and gamepads directly in your browser without installation.

Landing page showing the available test menu.

Cost / License

  • Free
  • Open Source (MIT)

Platforms

  • Online
Gamepad testing page
Audio input test page: records and plays back audio locally.
+3
Tests screen pixels and displays monitor refresh rate.
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Device Test Online was added to AlternativeTo by elliepetalmedia on and this page was last updated .

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What is Device Test Online?

Device Test Online is a comprehensive, client-side utility suite designed to test and validate your computer hardware and peripherals. Unlike scattered single-purpose websites, it combines essential diagnostic tools into one privacy-focused dashboard.

It is perfect for gamers verifying new gear, buyers testing used electronics, or remote workers troubleshooting setup issues. The entire suite runs 100% in your browser, no software installation is required, and no audio/video data is ever recorded or uploaded to a server.

Key Features:

  • Monitor Diagnostics: Detect dead or stuck pixels with high-contrast color cycling. Includes a Refresh Rate Counter to verify if your monitor is configured correctly.

  • Input Device Testing:

  • Mouse: Check Polling Rate (Hz) and jitter to verify gaming mouse performance.

  • Keyboard: Visualize N-Key Rollover (Ghosting) to see how many simultaneous keys your keyboard can register.

  • Gamepads: Testing buttons, triggers, vibration, and drift on Xbox, PlayStation, and generic USB controllers.

  • Audio Testing: Record and playback audio without downloading recording software.

  • Privacy First: Built on a serverless architecture. All tests use standard HTML5 APIs locally, data never leaves your device.

Why use this site? While other sites only test your screen or a single peripheral, Device Test Online offers a complete health check for your entire setup (Audio, Input, and Display) in a single, lightweight interface.