Sites don't need cookies to recognize you. How your system draws text and shapes, processes sound and which fonts it has add up to an ID that stays the same across sites, private windows and VPNs. Here is yours, what it is made of, and whether your browser scrambles it.
53 sniffers · no permission asked
You're probably from . You speak , and your computer runs on with a clock.
You're on , using , with a screen and graphics: .
You like , and . . Your fonts drop a hint: . As for your age, .
Referer · document.referrernavigator.languagesIntl.DateTimeFormatIntl …timeZoneIntl …hourCycleIntl.Locale weekInfoIntl.NumberFormatnavigator.keyboardspeechSynthesisprefers-color-schemeprefers-reduced-motioncolor-gamut · dynamic-rangeprefers-contrast · forced-colorsdisplay-modedoNotTrack · GPCnavigator.cookieEnabledpermissions.querypdfViewerEnablednavigator.webdriverbait elementwindow.ethereum · DOM markshistory.lengthcanvas measureTextuserAgentDatauserAgentData.brands…architecture · bitnessscreen · devicePixelRatiorequestAnimationFramescreen.isExtended · screenXinnerWidth · availHeightWebGL RENDERERnavigator.gpu adapter.infoWebGL2 · MAX_TEXTURE_SIZEhardwareConcurrencynavigator.deviceMemorymaxTouchPoints · pointernavigator.getBatterynavigator.connectionWebRTC host candidateenumerateDevicesAudioContext.sampleRatePublicKeyCredentialbluetooth.getAvailabilityMediaSource.isTypeSupportedrequestMediaKeySystemAccessstorage.estimateError.messagecanvas.toDataURLWebGL getParameterOfflineAudioContextfonts → SHA-256SHA-256canvas × 2A set of small differences between computers: how the graphics card and driver draw a canvas or a WebGL scene, how the audio stack rounds a sound, which fonts are installed, plus screen, language and time zone. Each alone is common; together they are often unique. A site hashes them into an ID, and every site that runs the same script gets the same ID for you.
No. None of it depends on your IP address, and private windows draw and play sound the same way. That is why a fingerprint can follow you after you clear cookies or switch VPN servers. The ID card on this page remembers your last visit (in your browser only) to show it.
Use a browser that fights it: Brave adds random noise to canvas, WebGL and audio by default; Firefox has privacy.resistFingerprinting; Tor Browser makes every user look the same. Extensions that change the user agent or block canvas often make you more unique, not less. The "Fingerprint protection" row tells whether your browser randomizes.
Not without collecting everyone's fingerprints, which this page refuses to do: it stores nothing. It shows what a site can compute and whether it stays stable. Come back later: if the ID card says the fingerprint is the same, any site could have recognized you the same way.