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PC Test Tools

18 free tests

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Every test. One tap away.

Free tests for your monitor, keyboard, mouse and controller, right in your browser. Nothing to install, nothing uploaded. Go on, type something: every key you press lights up below.

See all 18 tests

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Every device.
One place.

Pick what you want to check. Each test runs right here, in your browser, and starts in one click.

  • Monitor & Display Tests

    Check a screen for dead pixels, backlight bleed, ghosting, refresh rate, HDR and more.

    • Monitor Test

      All-in-one full-screen monitor test: solid colors, gradients, grids, text sharpness and more.

    • Dead Pixel Test

      Full-screen solid colors (white, black, red, green, blue, cyan, magenta, yellow, gray) to spot dead, stuck and hot pixels and more.

    • Refresh Rate Test

      Measures the browser's real frame rate (Hz) from requestAnimationFrame timing, shows frame-time jitter and a moving-object sync check.

    • Monitor Ghosting Test

      Moving-object motion test (UFO-style) at several speeds and backgrounds to reveal ghosting, overshoot (inverse ghosting) and motion blur.

    • Backlight Bleed Test

      Pure black full-screen with brightness tips and an optional dim-gray step to reveal backlight bleed, IPS glow and clouding.

    • Stuck Pixel Fixer

      Flashes a small, movable, resizable RGB noise square over a stuck pixel for 10-60 minutes to try to revive it.

  • Keyboard Tests

    Test every key, rollover and ghosting on any keyboard.

    • Keyboard Tester

      Visual keyboard (ANSI/ISO/Mac layouts, full/TKL/75%/60%) that lights up every key pressed, with key history, codes and stuck/chatter hints.

    • N-Key Rollover Test

      Counts how many keys register at the same time and shows which combinations drop out (rollover / NKRO check).

  • Mouse Tests

    Test buttons, double-clicking, click speed, scrolling and polling rate.

    • Mouse Test

      Tests every mouse button (left, right, middle, back, forward), the scroll wheel in both axes and shows events live.

    • CPS Test

      Click-speed test with 1/3/5/10/30/60/100-second modes, live CPS graph, personal best and shareable result card.

    • Double Click Test

      Detects a faulty mouse that double-clicks on a single click by measuring the gap between mouse-down events per button.

  • Controller Tests

    Test Xbox, PlayStation and generic gamepads: buttons, triggers, sticks and drift.

    • Gamepad Tester

      Live view of every connected controller: buttons, analog triggers, stick positions with circularity and deadzone plot, vibration test.

  • Webcam & Other Devices

    Check your webcam, printer and other devices in the browser.

    • Webcam Test

      Checks a webcam in the browser: live preview, device picker, real resolution and frame rate, snapshot and more.

  • Screen Tools & Utilities

    Full-screen tools for presenting, streaming, lighting and pranks.

    • Screen Tools & Utilities

      Every full-screen and utility tool in one place: black screen, teleprompter, scoreboard, hacker typer and more.

    • Black Screen

      One-click full-screen pure black with a timer, dim-to-black, an optional clock overlay and a keep-awake toggle.

    • Hacker Typer

      Type anything and realistic code pours out. Full-screen hacker themes, ACCESS GRANTED pop-ups and fake progress panels.

    • Online Teleprompter

      Paste a script and scroll it smoothly with adjustable speed, font size, margins, mirror/flip mode, countdown and remote control by keyboard.

    • Online Scoreboard

      Big, full-screen two-team scoreboard with timer, periods, fouls and keyboard shortcuts; presets for basketball, volleyball and more.

Why use PC Test Tools

  • Private: zero uploads

    Every test runs in your browser. Nothing you type, film or mark leaves your device.

  • Free: zero sign-ups

    No sign-up, no download and no trial. Each tool starts with one click.

  • Honest: 18 free tests

    Each page explains what a browser can and can't measure, and what to do next.

Recently updated

  • Backlight Bleed Test

    Pure black full-screen with brightness tips and an optional dim-gray step to reveal backlight bleed, IPS glow and clouding.

  • Black Screen

    One-click full-screen pure black with a timer, dim-to-black, an optional clock overlay and a keep-awake toggle.

  • Dead Pixel Test

    Full-screen solid colors (white, black, red, green, blue, cyan, magenta, yellow, gray) to spot dead, stuck and hot pixels and more.

  • Double Click Test

    Detects a faulty mouse that double-clicks on a single click by measuring the gap between mouse-down events per button.

Frequently asked questions

Are the tests on PC Test Tools free?

Yes. Every test is free to use, with no account, no download and no time limit. The site may show a small number of ads to cover its costs. Ads are kept away from the tools, so they never cover a test or sit next to a button you might click by accident. Settings you change stay in your own browser.

Do the tools upload anything from my computer?

No. The tests run entirely in your browser, on your device. Camera images, the keys you press and the screen spots you mark stay on your computer or phone and are never sent to a server. If a tool saves your settings, it uses your browser's local storage, which you can clear at any time in your browser settings.

Which browsers and devices do the tests work on?

The tests work in current versions of Chrome, Edge, Firefox and Safari on Windows, macOS, Linux, Android, iPhone and iPad. A few tests need features that some browsers lack, such as gamepad vibration or true full screen on iPhone. When that happens, the page tells you what is missing and which browser to use instead.

Can a browser test replace professional calibration or repair tools?

No. A browser can show test patterns, read key and button events and time your clicks, but it can't measure brightness in nits, true color accuracy or panel response time. Those need a colorimeter, a high-speed camera or lab gear. Our tests help you spot defects and setting problems fast, and each page says when you need a better method.