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