Developer & publisher
Vigneshwaran Vijayakumar
Developer · India
I publish I/O Checkup to make everyday hardware troubleshooting clearer: a focused test, an understandable result, and an honest explanation of what the browser can—and cannot—measure.
Developer and publisher
Vigneshwaran Vijayakumar is a developer based in India and the publisher of I/O Checkup. The site brings focused hardware checks into the browser so you can investigate everyday device problems without installing a diagnostic suite.
A practical approach to hardware checks
I/O Checkup puts the diagnostic controls first and explains what each browser signal can and cannot tell you. A useful result is an observation you can repeat, not a promise that a device is healthy or a substitute for a manufacturer diagnostic.
The site is independent. It does not claim manufacturer endorsement, laboratory certification, or the ability to diagnose every physical hardware fault.
Questions and corrections
Questions, accessibility problems, and misleading explanations can be reported through the Contact page. Include the relevant tool URL and the steps needed to reproduce an issue; do not send passwords, private recordings, or device serial numbers.