System & network
Measure your connection, benchmark your processor and graphics, and see the details your browser can report about this device.
- System InfoSee your device specs in one place: operating system, browser, CPU threads, memory, GPU, screen resolution, colour gamut, network and storage. Copy as text. Open tool
- Ping & Jitter TestRun a ping test in your browser. Measure latency, jitter and packet loss with a live chart to diagnose lag in games, Zoom and Teams calls. Open tool
- Internet Speed TestFree internet speed test. Measure download speed, upload speed, ping and jitter in about 25 seconds, with no app or Flash needed. Open tool
- CPU BenchmarkRun a quick CPU benchmark in your browser. Get single-thread and multi-thread scores, see how well your processor scales, and compare with reference devices. Open tool
- GPU TestTest your graphics card in the browser. See GPU model, vendor and WebGL details, then run a shader benchmark that increases load until the frame rate drops. Open tool
- Storage Speed TestMeasure read and write speed of your device storage through the browser, check storage quota and usage, and test IndexedDB, OPFS, Cache and localStorage. Open tool
- Battery TestCheck your battery level, charging state, estimated time remaining and drain rate per hour in the browser. Works in Chrome and Edge on laptops and Android. Open tool
- Browser CheckCheck what your browser supports: WebGL, WebGPU, WebRTC, codecs such as AV1 and HEVC, Gamepad, WebUSB, WebHID, Bluetooth and more. Instant compatibility report. Open tool
- GPS TestTest your device's GPS and location accuracy in the browser. See latitude, longitude, accuracy, altitude, speed, heading and time to first fix. Open tool
- Printer Test PagePrint a free test page to check your printer: CMYK and RGB colour bars, grey ramps, text sharpness, nozzle check pattern and an alignment grid. Open tool
Fix guides
- High Ping and Jitter? How to Reduce Lag SpikesReduce high ping, jitter and packet loss for gaming, Zoom and Teams. Fix Wi-Fi interference, bufferbloat, background downloads and router issues.
- How to check a used laptop before you buy itA practical checklist for buying a used or refurbished laptop: test the screen, keyboard, battery, ports, speakers, camera and performance in 10 minutes, and spot locked or stolen devices.
- Slow Computer? 10 Ways to Speed Up a Laptop or PCSpeed up a slow computer or Mac. Remove startup apps, free disk space, check for malware and overheating, and benchmark the CPU before and after.
- Wi-Fi Keeps Disconnecting? How to Fix DropoutsFix Wi-Fi that keeps dropping on Windows, Mac, phone or laptop. Power settings, router channel, band steering, driver and DHCP fixes.
- Printer Not Printing? Fix Offline, Stuck Queue and Blank PagesFix a printer that is offline, stuck in the queue, prints blank pages or missing colours. Queue, driver, Wi-Fi and nozzle cleaning steps.
- Internet Slower Than Your Plan? How to Get Full SpeedFind out why your internet is slower than the speed you pay for. Test on cable vs Wi-Fi, fix router placement, old hardware, background usage and ISP issues.
- Laptop Battery Draining Fast? How to Make It Last LongerFind out why your laptop battery drains quickly and fix it. Measure drain rate, find power-hungry apps, adjust brightness and power mode, and check battery health.
- Computer Overheating? How to Cool Down a Hot PC or LaptopStop your computer overheating, loud fans and thermal throttling. Clean vents, improve airflow, check heavy apps, and benchmark before and after.