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All Tests

Free tools for seeing exactly what your browser, device and connection reveal, grouped into browser, network and privacy tests, and then into the area each tool inspects.

Browser & Device Tests

Everything your browser tells a website the moment you arrive: fingerprint, user agent, screen, engine and the hardware underneath it.

Fingerprinting

The graphics, audio and canvas signals that together form an identifier you carry between sites, with no cookie involved.

Browser Fingerprint Test How unique and trackable is my browser? Build your device fingerprint from canvas, WebGL, audio and dozens of signals, then see how identifiable it makes you. Open test Canvas Fingerprint Test What is my canvas fingerprint? See the canvas hash your graphics stack produces, and what about your setup changes it. Open test WebGL Fingerprint Test What does WebGL reveal about my GPU? Read your graphics card, driver strings and WebGL parameters, one of the strongest hardware signals. Open test Audio Fingerprint Test What is my audio fingerprint? Hash the output of your audio stack, a silent fingerprint that needs no microphone permission. Open test

Browser & OS Detection

Which browser, engine, version and operating system your client actually reports, and how that is changing.

Browser Information What browser and version am I using? Detect your browser and version, engine, platform, languages, timezone and enabled features at a glance. Open test What Is My User Agent What user agent is my browser sending? See your raw user-agent string parsed into browser, engine, version, operating system and device. Open test User-Agent Client Hints Test Which client hints does my browser send? See which client hints your browser volunteers, and which it makes a site ask for. Open test Operating System Test What operating system am I running? Detect your operating system and see where the UA string, platform value and client hints disagree. Open test

Screen & Display

Your resolution, viewport, pixel density, colour capabilities and the display preferences a site can read.

Screen Resolution Test What is my screen and viewport size? See your screen resolution, viewport, pixel ratio, colour depth and orientation, live as you resize. Open test Device Pixel Ratio Test What is my device pixel ratio? Check your device pixel ratio and see how browser zoom and display scaling move it up and down. Open test Dark Mode & Display Test Is my device in dark mode? Detect your colour scheme preference, display gamut, HDR support and reduced-motion setting. Open test Touch Support Test Does my device support touch? Check your maximum touch points, supported pointer types and whether hover is available. Open test

Hardware & Capabilities

The machine and the APIs underneath the browser: processor count, memory, graphics hardware, battery and codec support.

Device & Hardware Info What hardware does my browser reveal? Read the hardware your browser exposes: CPU cores, memory, GPU renderer, touch points and battery. Open test Graphics Card Test What graphics card do I have? Identify the graphics card and driver string your browser renders with, straight from WebGL. Open test Battery Status Test What is my battery level? Read your battery level, charging state and time remaining, and see which browsers still expose it. Open test Codec & Media Support Test Which video and audio codecs can I play? Test which video and audio codecs your browser can play, from H.264 and AV1 to Opus and FLAC. Open test JavaScript Performance Test How fast is JavaScript on my device? Benchmark raw JavaScript speed, maths throughput and DOM work in a few seconds, in your browser. Open test Speech Voices Test Which text-to-speech voices do I have? List every text-to-speech voice your browser exposes, a small but distinctive fingerprint signal. Open test Gamepad Test Is my gamepad detected? Detect connected controllers and read their buttons and axes live, using the Gamepad API. Open test

Network & IP Tests

What your connection exposes: your public IP address, the network behind it, connection quality and the local addresses WebRTC can quietly leak.

IP Address & Location

The address every site sees, the network that owns it and what geolocation can be inferred from it.

What Is My IP Address What is my public IP address? Look up the public IPv4 and IPv6 address, network and rough location that websites see. Open test IP Geolocation Test Where does my IP say I am? See the country, region, city and coordinates your IP resolves to, and how close the guess is. Open test IPv6 Test Do I have IPv6? Check whether you have working IPv6, and whether it agrees with your IPv4 address. Open test ASN & ISP Lookup Which ISP and ASN am I on? Find the ASN, organisation and domain behind your IP, the network that carries your traffic. Open test

Leaks & Masking

Whether your real address escapes around a VPN, and whether the connection looks like a proxy or a hosting provider.

WebRTC Leak Test Is WebRTC leaking my real IP? Check whether WebRTC leaks your local or public IP, the classic hole that shows through a VPN. Open test DNS Leak Test Is my DNS leaking outside my VPN? See which resolvers your lookups reach, and whether a VPN or DoH is actually containing them. Open test Proxy & VPN Detection Test Can websites tell I am using a VPN? See whether your connection looks like a proxy, VPN or hosting exit, and which signals give it away. Open test

Connection Quality

Speed, latency, jitter and the request headers your browser attaches to everything it fetches.

Connection Info What does my connection look like? See your connection type, estimated speed, latency and data-saver state from the browser itself. Open test Latency & Jitter Test What is my ping and jitter? Measure round-trip latency and jitter with a short burst of timed requests, right in the page. Open test HTTP Headers Test What HTTP headers is my browser sending? See the request headers your browser attaches to every fetch, including Sec-Fetch and client hints. Open test

Time & Timezone

Your clock, your timezone and whether they agree with the network you are coming from.

Timezone & Clock Test What is my timezone and does my clock match? Check your timezone, clock and DST state against the network you are coming from. Open test

Privacy & Security Tests

The signals that decide how trackable you are: storage access, installed fonts, tracking-protection state and the permissions a page can ask for.

Storage & Cookies

Every place a site can leave something behind on your device, and whether it is actually available right now.

Cookies & Storage Test Are cookies and storage enabled? Check whether cookies, local storage, session storage and IndexedDB are available right now. Open test Local Storage Test Is localStorage available and how much can it hold? Test whether localStorage works, measure its real capacity and see what is already stored here. Open test IndexedDB Test Does IndexedDB work and how much space do I have? Open a real IndexedDB database to prove support, then read your storage quota and usage. Open test Evercookie Test What tracking storage survives clearing cookies? Check every place a site could hide an identifier that survives clearing your cookies. Open test

Tracking Signals

The opt-out signals you send, the requests your blocker stops and the fingerprint surface you cannot switch off.

Do Not Track Test Are my privacy signals switched on? Check whether Do Not Track and Global Privacy Control are enabled, and what each one really means. Open test Global Privacy Control Test Is Global Privacy Control switched on? Check whether your browser sends Global Privacy Control, the opt-out privacy laws actually recognise. Open test Ad Blocker Detector Is my ad blocker actually working? Test whether an ad blocker or content filter is active by watching for requests it would stop. Open test Font Detection Test Which fonts do I have installed? Detect the fonts installed on your device, one of the strongest fingerprinting signals there is. Open test

Permissions & Access

What a page can ask your browser for, what it can already see without asking, and the tells that give away a private window.

Permissions & Feature Test What permissions can this site access? See the state of every permission this page can query, camera, location, notifications and more. Open test Private Mode Detection Test Can websites detect my incognito window? Find out whether sites can tell you are in a private window, and which give-away checks still work. Open test Browser Extension Test Can websites detect my extensions? Check which of your installed extensions a website can detect, and why that still matters. Open test Camera & Microphone Test How many cameras and microphones do I have? See how many cameras and microphones your machine has before you grant any permission. Open test