About Device Tester

Device Tester provides free browser-based diagnostics for common device checks. The tools are designed to be fast, simple, and privacy-conscious.

Learn about Device Tester, a free browser-based utility for checking keyboards, webcams, microphones, displays, speakers, and device capabilities.

About Device Tester

Learn about Device Tester, a free browser-based utility for checking keyboards, webcams, microphones, displays, speakers, and device capabilities.

What the site does

Device Tester is a browser utility for manual checks of common input, camera, audio, screen, and browser-reported display capabilities. It does not replace manufacturer diagnostics, calibrated instruments, or a qualified repair assessment.

How results are produced

Each tool uses standard browser events and device APIs. The page shows only what the current browser, operating system, permissions, and connected hardware expose, so results can differ between browsers and devices.

Operation and funding

The site is available without registration. It may display third-party advertising to support hosting and maintenance; advertising does not change the test result shown by the tool.