Free network and system utilities.
All tools
What Is My IP
See your public IPv4 and IPv6 address, ISP, and approximate location.
Speed Test
Measure your download speed, upload speed, and ping in real time.
Screen Resolution
Check your viewport size, screen resolution, pixel ratio, and color depth.
Password Security
Check password strength, entropy, and estimated crack time — fully client-side.
User-Agent Parser
Parse any user-agent string into browser, OS, engine, and device type.
HTTP Headers
View the HTTP request headers your browser actually sends to servers.
DNS Lookup
Look up A, AAAA, MX, TXT, NS, CNAME, and SOA records for any domain.
Browser Info
See everything your browser reveals — languages, plugins, canvas fingerprint, WebGL, and more.
Hardware Info
Find out what GPU, CPU, and memory your computer has — read directly from your browser.
Browser Benchmark
Quick CPU, GPU, and memory benchmarks that run entirely in your browser.
Webcam & Mic Test
Preview your camera, check resolution and frame rate, and watch your mic level in real time.
Battery Status
Live battery level, charging state, and time-to-full or time-to-empty estimates.
Storage Info
Check browser storage quota and usage — localStorage, sessionStorage, IndexedDB, and cookies.
Gamepad Tester
Test any controller — Xbox, PlayStation, Switch Pro, or generic. Live button and analog-stick visualization.
WebRTC Leak Test
Check if your VPN is leaking your real IP through WebRTC — shows every address STUN candidates reveal.
Timezone & Locale
See your IANA timezone, UTC offset, DST state, calendar, and every Intl value your browser reports.
Geolocation
Request your browser's GPS fix and see coordinates, accuracy, altitude, heading, and speed live.
Font Detector
Detect which fonts are installed on your system using a canvas width trick. Works with no permission prompt.
Cookie Viewer
Browse and delete the cookies JavaScript can see for this origin, with values masked by default.
Subnet Calculator
Turn an IPv4 CIDR into network, broadcast, host range, netmask, and wildcard mask — instant, client-side.
UUID Generator
Generate random v4 or time-sortable v7 UUIDs (RFC 4122 / RFC 9562), one at a time or in bulk.
Hash Generator
Compute SHA-1, SHA-256, SHA-384, and SHA-512 of any text or file using WebCrypto — nothing is uploaded.
A mix of pure client-side tools and API-backed tools that observe your connection from the outside.