Browser & Device Test Tools

Most popular

Highest-demand tools in this category.

• Coin Flip

  Flip a fair virtual coin — heads or tails — instantly in your browser.

• Metronome

  Browser metronome with adjustable BPM — short clicks via Web Audio, nothing uploaded.

• Typing Speed Test

  Measure words-per-minute and accuracy with a timed typing test — all in your browser.

• Keyboard Test

  Test your keyboard with a live visual layout — keys light up as you press them, plus key/code event logs.

• Microphone Test

  Verify your mic with a live input-level meter. Audio stays on your device — nothing is recorded or uploaded.

• Pomodoro Timer

  Focus/break Pomodoro timer with customizable intervals — runs locally in your tab.

• Webcam Test

  Open the front camera for a live preview in this tab. The stream is not recorded or uploaded.

• Stopwatch

  Simple stopwatch with start, pause, and reset — centisecond precision in your browser.

Timers & quick picks

Simple timers and quick utilities you often need beside a device check.

• Yes No Picker

  Get a random Yes or No answer for quick decisions — private and instant.

Device & browser tests

Webcam, mic, speakers, keyboard, mouse, clipboard, and related capability checks.

• Mouse Test

  Test mouse movement, left/middle/right clicks, and scroll wheel inside a private on-page pad.

• Speaker Test

  Speaker Test plays one short sine beep at 880 Hz through the default output device. It does not use the microphone and it does not record.

• Gamepad Test

  Test connected gamepads — see button presses and axis values live in your browser.

• Vibration Test

  Trigger short vibration patterns via the Vibration API — mainly on mobile browsers.

• Screen Resolution Checker

  See screen size, available area, window size, pixel ratio, and orientation — updates live on resize.

• Battery Status

  Check battery level, charging state, and time remaining via the Battery Status API — private, in-browser.

• Online Status

  See whether your browser currently reports online or offline, with live updates.

• Browser Info

  Inspect user agent, platform, language, concurrency, timezone, and connection hints from your browser.

• Device Pixel Ratio

  Inspect devicePixelRatio and approximate physical screen pixels for your display.

• LocalStorage Size

  Estimate how much localStorage this origin is using — keys and approximate UTF-16 bytes.

• Clipboard Test

  Verify clipboard write and read permissions with sample text — contents never leave your device.

• Fullscreen API Test

  Enter and exit fullscreen on a page element using the Fullscreen API.

• Media Devices List

  List cameras, microphones, and speakers available to this browser tab.

• Storage Quota Estimate

  Estimate origin storage usage and quota via the StorageManager API.

• Notification Permission Test

  Check and request browser notification permission, then fire a local sample notification.

• Speech Synthesis Test

  Test text-to-speech voices in your browser — speak sample text with local Speech Synthesis.

• Wake Lock Test

  Request a screen wake lock so the display stays on while this tab is visible.

Browser Tools FAQ

Is my webcam stream recorded?

No. FileToolsHub device tests do not record or upload your camera or microphone streams.

Test works here but not in my meeting app?

The meeting app may use different permissions or devices. Compare selected input devices and grant access per site.

Why did the mic test fail?

Check OS privacy settings, browser site permissions, headset connection, and exclusive mode in other apps.