Comprehensive collection of free testing tools to verify electronics before buying
Check your screen for dead or stuck pixels by cycling through solid colors.
Start TestDetect image retention and burn-in on OLED displays with gray-level patterns.
Start TestTest color gradients, grayscale reproduction, and check for color banding.
Start TestCheck your monitor's refresh rate and test for motion clarity and tearing.
Start TestDetect light leakage and IPS glow on LCD monitors with dark screen tests.
Start TestTest left and right audio channels for proper separation and balance.
Start TestTest the full frequency range from 20Hz to 20kHz for audio quality.
Start TestTest all keys, detect stuck or dead keys, perfect for mechanical keyboards.
Start TestTest game controllers for analog stick drift and button responsiveness.
Start TestSearchable database of 200+ gaming monitors with input lag data, refresh rates, and specifications.
Search DatabaseCompare up to 4 monitors side by side with detailed specifications and performance analysis.
Compare MonitorsJoin thousands of smart buyers who test before they purchase
Comprehensive testing tools for cameras, audio equipment, vehicles, smart home devices, and more. Each tool includes detailed checklists, calculators, and product recommendations.
Keystone, focus patterns, color accuracy, and uniformity tests for projectors.
Live camera feed with resolution, FPS stats, and quality verification.
IPD alignment, lens distortion, FOV patterns, and screen door effect checks.
Stereo balance, surround sound positioning, and frequency response testing.
E-ink ghosting, contrast patterns, and refresh rate verification.
Display quality, touch responsiveness, and sensor accuracy tests.
Pre-flight checklist, battery health calculator, and safety verification.
Print quality assessment, dimensional accuracy scoring, and calibration checks.
Fret buzz detection using microphone, intonation checks, and frequency analysis.
Navigation, sensor testing, suction power, and runtime calculator.
Battery range calculator with terrain, assist level, and weight factors.
Ecosystem compatibility for Alexa, Google, HomeKit, and SmartThings.
Runtime calculator, capacity verification, and solar charging evaluation.
Heart rate accuracy, step counter verification, and sleep tracking assessment.
Microphone quality, audio latency, stereo balance, and ANC evaluation.
NKRO rollover test, individual key verification, and RGB testing.
Panel uniformity, dead pixels, gradient banding, and response time tests.
Day/night quality, G-sensor testing, loop recording, and parking mode.
Stabilization rating, waterproof inspection, audio quality, and FOV check.
Speed recording, range mapping, device capacity, and WiFi band comparison.
Pressure sensitivity, accuracy/parallax, tilt detection, and palm rejection.
Night vision, motion detection, two-way audio, and cloud storage tests.
Take our interactive quizzes and get personalized product recommendations in under 2 minutes.
