Test anything. Right in your browser.
No install. No signup. Just tools that actually measure your screen, your gear, and you.
5-second click race
Mini-CPS embedded right here. Click the box as fast as you can — see your speed live, no signup, no install.
Open the full CPS Test (10s, 30s, share) →Pick a category
Check
Does this device work?
8 tools — monitor, keyboard, webcam, mic, headphones
Measure
How fast or accurate is it?
5 tools — mouse DPI, refresh rate, internet speed, battery
Test
How good are you?
6 tests — CPS, reaction, hearing, memory, aim
Calculate
Quick math helpers.
5 calculators — eDPI, cm/360°, FOV, Discord time
Three steps to a real answer
Pick a test
Browse by category or search for the device or ability you want to measure.
Run in browser
Everything runs locally in your browser. Most tests finish in under a minute.
Share or fix
Share your score, or use the result to decide whether to return, repair, or upgrade.
Browse all 19
CPS Test (Click Speed)
How many times can you click in 10 seconds?
GPU & WebGL Test
See your GPU vendor + WebGL benchmark in 5 seconds.
Connection Info
See your network type, downlink, RTT — in one panel.
Memory Test
Two memory games — sequence (Simon) + visual board recall.
Aim Trainer
Click 30 moving targets — measure accuracy, average reaction, hits per minute.
Reaction Time Test
Click when the screen turns green — 4 modes, age-adjusted percentile.
Hearing Range Test
Find the highest frequency you can hear.
Color Vision Test
Ishihara-style screening for color vision.
Mouse DPI Analyzer
Find your real DPI by moving the mouse a known distance.
Battery Health Check
See your laptop or phone's real battery level, charge state, and time-to-full.
Monitor Refresh Rate Test
Verify your monitor really runs at 60, 144, 240 Hz or higher.
Monitor Dead Pixel Checker
Spot dead and stuck pixels on any screen.
Keyboard Tester
Verify every key works and check N-key rollover.
Microphone Tester
Verify your mic works and measure noise floor.
Webcam Test
Verify your camera works and check resolution + FPS.
Browser & Device Info
Resolution, CPU cores, RAM, OS, browser — read at a glance.
Touchscreen Test
Multi-touch visualizer + dead-spot detector for phones, tablets, and touch monitors.
Gamepad Tester
Check buttons, triggers, sticks, and stick drift.
Headphone & Speaker Test
L/R channels, frequency sweep, stereo imaging.
For when you need a fast answer
- eDPI Calculator DPI × in-game sensitivity = effective DPI.
- cm/360° Calculator How many cm of mouse movement for a full turn.
- inches/360° Calculator cm/360° in imperial inches for US setups.
- FOV Sensitivity Adjuster Match aim feel across different FOV settings.
- Discord Timestamp Generator Build dynamic Discord timestamps in any timezone.
Trustworthy by design.
Privacy-first
Camera, mic, and audio are processed in your browser. Nothing uploaded.
Runs anywhere
Static HTML. Works on phones, tablets, old laptops. Lighthouse 95+.
No accounts
Nothing to sign up for. Bookmark the tool, get back to work.
Made by hand
Every tool is fussed over — copy, layout, defaults that actually make sense.
From the blog
Understanding Browser Fingerprinting: Risks and Research
Explore the intricacies of browser fingerprinting, its privacy implications, and the latest research findings in this comprehensive analysis.
Color blindness statistics: data from 12 studies (2026)
How common is color blindness, by sex, ethnicity, region, and type? A summary of 12 peer-reviewed studies covering ~250,000 subjects worldwide.