Free Browser Diagnostic Tools

Check your network connection type, speed, and latency

See your public IP address with city, country, and ISP info

See both your public and private/local IP addresses

Find out which DNS resolver your connection is using

Check your screen resolution, viewport size, and pixel ratio

Calculate your monitor PPI from screen size and resolution

Track your cursor X/Y coordinates in real-time

Check battery percentage, charging status, and time estimates

Test your webcam with a live preview, resolution, and FPS info

Test your microphone with a waveform visualizer and playback

Test every key on your keyboard with a visual layout

List your connected Bluetooth and USB devices

Analyze your microphone quality with noise and frequency analysis

Check your password strength with crack time estimates

Test if your ad blocker is blocking ads from major providers

Check for IP, DNS, and WebRTC leaks in your VPN connection

Simple yes/no check if your VPN is protecting you

Detect your browser name, version, OS, and device type

View and copy your full user agent string with parsed breakdown

See your timezone, UTC offset, DST status, and local time

Pick any color from your screen and get hex, RGB, HSL values

Generate a QR code from any URL or text and download it

See your location on a map using browser geolocation

Detect common browser extensions installed in your browser

Upload an image and identify the font using AI

Detect your system color scheme, contrast, and motion preferences