Network and system tools that just run.

See your public IPv4 and IPv6 address, ISP, and approximate location.

View the HTTP request headers your browser actually sends to servers.

Look up A, AAAA, MX, TXT, NS, CNAME, and SOA records for any domain.

Turn an IPv4 CIDR into network, broadcast, host range, netmask, and wildcard mask — instant, client-side.

Check your viewport size, screen resolution, pixel ratio, and color depth.

See everything your browser reveals — languages, plugins, canvas fingerprint, WebGL, and more.

Find out what GPU, CPU, and memory your computer has — read directly from your browser.

Preview your camera, check resolution and frame rate, and watch your mic level in real time.

Live battery level, charging state, and time-to-full or time-to-empty estimates.

Check browser storage quota and usage — localStorage, sessionStorage, IndexedDB, and cookies.

Test any controller — Xbox, PlayStation, Switch Pro, or generic. Live button and analog-stick visualization.

See your IANA timezone, UTC offset, DST state, calendar, and every Intl value your browser reports.

Request your browser's GPS fix and see coordinates, accuracy, altitude, heading, and speed live.

Detect which fonts are installed on your system using a canvas width trick. Works with no permission prompt.

Measure your download speed, upload speed, and ping in real time.

Quick CPU, GPU, and memory benchmarks that run entirely in your browser.

Parse any user-agent string into browser, OS, engine, and device type.

Generate random v4 or time-sortable v7 UUIDs (RFC 4122 / RFC 9562), one at a time or in bulk.

Check password strength, entropy, and estimated crack time.

Check if your VPN is leaking your real IP through WebRTC — shows every address STUN candidates reveal.

Browse and delete the cookies JavaScript can see for this origin, with values masked by default.

Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any text or file using WebCrypto.