About

About Device Bench

Device Bench is a set of small, fast hardware diagnostics that run entirely in your browser. It exists because checking whether a key, a microphone, or a screen works shouldn't require installing software, creating an account, or sending anything to a server.

Three commitments apply to every tool on this site:

Local execution. Tests use the capabilities your browser already has — key events, the Web Audio API, full-screen rendering. Nothing you type, say, or display leaves your device.

Published methodology. Every tool page explains what is measured and how, including the limits of what a web page can observe. If a tool can't test something (like the Fn key), the page says so instead of pretending.

No accounts, no dark patterns. No sign-ups, no email capture, no artificial limits. The site is built and run by an independent developer.

Questions or a test you'd like to see added? Get in touch.