Gizmetto

What it is

Gizmetto is a collection of 41 free online tools that run directly in your web browser. The tools include audio utilities like a pitch detector, guitar tuner, speaker and microphone tests; display diagnostics such as dead pixel and burn-in tests; device checks for cameras, mice and controllers; image tools for removing EXIF data and converting file formats; puzzle solvers; and measuring and creator tools. All processing occurs on your device using the Web Audio API and similar browser technologies. Nothing is uploaded, no sign-up is required, and the tools work on both phones and computers. The site is made and maintained by Nabeel, a web developer focused on creating tools that open instantly and respect privacy.

Questions from the bench

How does Gizmetto keep my audio private?

The Web Audio API built into every modern browser analyzes sound on your device, and the result is shown on screen. Nothing is recorded, sent or stored. The only exception is the mic test, which keeps a 5 second recording in the tab only until you stop.

Do I need to create an account to use the tools?

No. There is no account, no app and no download. All tools are free to use with no sign-up required.

What devices and browsers are the tools tested on?

Each tool is being tested by hand on iPhone, Android, Windows and Mac, with speakers, wired headphones and Bluetooth earbuds. The devices and browsers each tool was checked on will be listed in the about section.

When is my microphone active?

The microphone turns on only after you tap Start on a tool that needs it. It turns off when you tap Stop or leave the page. Sound is then analyzed in your browser and discarded.