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Developer builds 118-test browser tool that keeps all device data local

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A developer frustrated with ad-heavy, privacy-questionable online device testers built TestOnDevice, a browser-based tool offering over 118 hardware diagnostics. The tool tests microphones, webcams, keyboards, gamepads, MIDI devices, and more using native Web APIs, with no server uploads, no account required, and no data leaving the user's machine. Modern browser APIs such as MediaDevices.getUserMedia, the Gamepad API, and Web MIDI API handle nearly every test entirely client-side. The project's core design rule — that no device data ever touches a server — guided all technical decisions, including aggressively releasing hardware access as soon as a test ends. The developer also noted browser privacy protections like blank device labels before permission is granted, which required UX workarounds such as displaying generic device names initially.

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Developer builds 118-test browser tool that keeps all device data local · ShortSingh