Speed Test & Diagnostics

Free internet speed test, measure download, upload, ping and jitter with real parallel-stream saturation. Detects bufferbloat (latency under load), shows a live throughput graph, grades your connection for 4K, gaming and calls, and saves your history. No ads, no signup.

See your public IP address instantly and look up the location, ISP, ASN and timezone of any IPv4 or IPv6 address, free, no signup.

Check if your monitor is actually running at its rated refresh rate (60Hz, 144Hz, 240Hz) with a full telemetry dashboard: live Hz, average, 1% low, frame time, jitter and stability. Includes a timed benchmark, frame-time consistency graph and a fullscreen screen-tearing test. Free, no download, runs in your browser.

Advanced FPS test, measure your browser's real frame rate with average FPS, 1% and 0.1% lows, stability and frame-time in real time. Run timed benchmarks, stress your GPU with an adjustable render load, and get a performance grade. Free, no signup, 100% in-browser.

Free online dead pixel test and stuck pixel fixer, fill your screen with pure solid colors in fullscreen to find dead, stuck and hot pixels on a monitor, laptop, phone or TV. Includes a gradient banding test and an RGB flashing pixel fixer. 100% in-browser, no download.

Free online vision test suite, 9 screeners in one: Ishihara-style color blindness, color-hue discrimination, screen-calibrated visual acuity (20/20 estimate), red-green duochrome, Jaeger near-vision reading, astigmatism, Amsler grid, contrast sensitivity and peripheral vision. Per-eye toggle, saved results, private, no download.

Advanced CPS test and click-speed suite, measure clicks per second, jitter clicks, butterfly clicks, drag clicks, right clicks and double clicks with millisecond precision. Free, no ads, no signup, perfect for gamers and mouse hardware checks.

Free online aim trainer with four modes, Grid Shot, Flick, Precision and Tracking. Timed 15/30/60s runs, combo multiplier, live accuracy, reaction and time-on-target tracking, an Aim Rating from Bronze to Grandmaster and saved personal bests. A browser Aimlab / Kovaaks alternative with no download.

Free online keyboard tester, press each key and see it light up on a full visual keyboard. Detect dead or stuck keys, count presses, read key codes live, and test N-key rollover and ghosting. 100% in-browser, no download.

Free reaction time test, measure your reflexes in milliseconds. Click when the screen turns green across visual, audio, go/no-go and color-match modes, then see your average, best, median and consistency with a per-round chart and personal best.

Measure your typing speed in words per minute (WPM) with live accuracy tracking. Includes a dedicated code-typing mode for programmers and a per-key error heatmap. Free, no signup, runs entirely in your browser.

Free online gamepad tester, connect any controller and see every button, trigger and analog stick respond live. Detect stick drift, read exact axis values, adjust the deadzone, check polling rate and test rumble/vibration. Works with Xbox, PlayStation, Switch Pro and generic USB controllers, 100% in-browser.

Test your microphone, webcam, and speakers in one place before any meeting or call. Live camera preview, real-time audio volume meter and frequency spectrum, record-and-playback, speaker channel test, and full device diagnostics. 100% browser-based and private, nothing is uploaded.