# Browser Fingerprint Test Discover your browser's unique fingerprint. Your browser reveals hundreds of data points that can track you across the web, even without cookies. All fingerprints are stored in `window.fingerprint` ##### What is Browser Fingerprinting? Browser fingerprinting collects information about your browser, operating system, hardware, and settings to create a unique identifier. This "fingerprint" can track you across websites without cookies or login, making it nearly impossible to avoid. ### Browser Identity Your unique browser fingerprint based on hardware, software, and configuration #### Complete Browser Fingerprint Calculating... This hash uniquely identifies your complete browser configuration (click to copy) ### Compare My Browser Fingerprint See how your browser fingerprint matches against known profiles from our database Analyzing fingerprint... ##### All Matches ##### Unlock Real Fingerprint Analysis Sign up for free to see how your actual browser fingerprint compares against our database of real browser profiles. [ Sign Up Free ](https://scrapfly.io/register)Already have an account? [Log in](https://scrapfly.io/login) ### All Fingerprinting Signals Comprehensive overview of all tracking vectors - click to test each signal #### Hardware [ Screen Resolution, color depth, HDR `-` ](https://scrapfly.io/web-scraping-tools/screen-fingerprint) [ Canvas 2D/3D rendering fingerprint `-` ](https://scrapfly.io/web-scraping-tools/canvas-fingerprint) [ GPU WebGL, vendor & renderer `-` ](https://scrapfly.io/web-scraping-tools/gpu-fingerprint) [ Audio AudioContext fingerprint `-` ](https://scrapfly.io/web-scraping-tools/audio-fingerprint) [ Codecs Video/audio format support `-` ](https://scrapfly.io/web-scraping-tools/media-codecs) [ Battery Battery level & charging `-` ](https://scrapfly.io/web-scraping-tools/battery-status) [ Media Devices Cameras, mics, speakers `-` ](#media_devices_props) #### Browser Information [ User-Agent Browser, platform, vendor `-` ](#navigator_props) [ High-Entropy UA Platform version, architecture `-` ](#ua_data_props) [ MIME Types Supported media formats `-` ](#mime_types_props) #### Software [ Fonts Installed system fonts `-` ](https://scrapfly.io/web-scraping-tools/fonts) [ DRM EME capabilities `-` ](https://scrapfly.io/web-scraping-tools/drm-capabilities) [ Keyboard Layout detection `-` ](https://scrapfly.io/web-scraping-tools/keyboard-layout) [ Voices Speech synthesis `-` ](https://scrapfly.io/web-scraping-tools/speech-synthesis-voices) [ Browser APIs Bluetooth, barcode, USB, NFC `-` ](#browser_apis_props) [ Permissions Granted/denied browser permissions `-` ](#browser_apis_props) [ System Styles Default CSS colors & fonts `-` ](#system_styles_preview) #### Network & Behavior [ Timezone Location & locale `-` ](https://scrapfly.io/web-scraping-tools/timezone-intl) Each signal contributes to your unique browser fingerprint. Click any link above to dive deep into specific tracking methods. ### Navigator Properties computing... Browser and system information exposed by navigator object Collecting navigator properties... Technical Details The Navigator object provides detailed information about your browser and operating system. Properties like `userAgent`, `platform`, and `hardwareConcurrency` (CPU cores) are highly identifying. Even the list of installed plugins can make you unique. **Privacy Risk:** The `webdriver` property instantly reveals automation (Selenium, Puppeteer). Properties marked in red are highly unique. ### Screen & Display computing... Your screen resolution and display characteristics Collecting screen properties... Technical Details Screen resolution, color depth, and pixel ratio create a unique signature. High-res displays (4K, 5K) or unusual aspect ratios make you stand out. The `devicePixelRatio` reveals if you're on a Retina display or standard monitor. ### Timezone & Locale computing... Your location revealed through time and language settings Collecting timezone data... Technical Details **Major Privacy Leak:** Your timezone (`Intl.DateTimeFormat().resolvedOptions().timeZone`) reveals your precise location. For example, "America/Los\_Angeles" narrows you down to the Pacific coast. Combined with other data, this can pinpoint your city. ### Memory & Performance computing... JavaScript heap size and memory limits (Chrome only) Collecting memory info... Technical Details Chrome exposes `performance.memory` which reveals your device's RAM allocation for JavaScript. This is unique to Chrome/Chromium browsers. Higher heap limits suggest more powerful devices. ### Storage Quota computing... Available storage space for web applications Collecting storage quota... Technical Details The `navigator.storage.estimate()` API reveals how much disk space browsers allocate for IndexedDB, Cache API, and other storage. Large quotas suggest ample disk space, which is another fingerprinting vector. ### MIME Types & Media Support computing... Supported media formats and MIME types for video/audio playback Detecting media format support... Technical Details Browsers support different media codecs based on platform, licensing, and hardware capabilities. Codec support reveals OS type (e.g., H.265 on modern systems), hardware features (VP9 hardware decoding), and even browser vendor decisions. This creates 3-5 bits of entropy in your fingerprint. ### System Styles computing... Default computed CSS styles in a fresh iframe • 0 properties, 0 unique values, 0 fonts Computing default styles... Technical Details Every browser applies default CSS styles to HTML elements. These "user agent stylesheets" vary by browser vendor, version, and platform. By creating a fresh iframe and reading computed styles, we can detect subtle differences in default font families, sizes, margins, and other properties. This provides 2-4 bits of entropy and can distinguish between browsers even with identical user agents. ### User-Agent Client Hints computing... Modern replacement for User-Agent string (Chromium 90+) Collecting UA Client Hints... Technical Details User-Agent Client Hints (`navigator.userAgentData`) is Google's replacement for the traditional User-Agent string. It provides detailed OS, architecture, and version information through high-entropy values. This is the future of User-Agent fingerprinting. ### Media Devices computing... Connected cameras, microphones, and speakers Enumerating media devices... Technical Details The `navigator.mediaDevices.enumerateDevices()` API reveals all connected audio/video devices. Device counts are highly identifying: desktop users typically have 1-2 cameras and 2-4 microphones (built-in + USB), while mobile users show predictable patterns (1 front camera, 1 back camera, 1 mic). **Privacy Note:** Without camera/microphone permissions, browsers only show generic labels like "audioinput 1" to protect privacy. However, device *counts* are still exposed, providing 3-5 bits of entropy. This reveals hardware setup: gaming rigs (multiple audio devices), professionals (external webcams + studio mics), or mobile users (minimal devices). ### Browser APIs computing... Modern browser API availability Detecting browser APIs... Technical Details Modern browser APIs like **Bluetooth**, **Barcode Detection**, and **Web Serial** reveal browser capabilities and experimental feature flags. The `Barcode Detection API` is especially rare since it requires Chromium 88+ with experimental features enabled, contributing 4 bits of entropy. The `Bluetooth API` clearly distinguishes Chrome/Edge from Firefox/Safari (2-3 bits). Hardware-related APIs like **Web USB**, **Web Serial**, and **Web NFC** are typically only available in Chromium-based browsers and often require HTTPS contexts or origin trials. The **Contact Picker API** is mobile-only (Android Chrome), instantly revealing device type. The combination of which APIs are available creates a unique signature, especially for experimental or origin trial features. This reveals not only browser type and version but also whether advanced web platform features have been enabled through flags or enterprise policies. ##### How to Protect Against Browser Fingerprinting - **Tor Browser:** The gold standard that randomizes fingerprints and routes traffic through Tor network - **Brave Browser:** "Farbling" technology adds randomness to fingerprinting APIs - **Firefox:** Enable `privacy.resistFingerprinting` in about:config to standardize fingerprints - **Browser Extensions:** Canvas Blocker, Privacy Badger, uBlock Origin (advanced mode) - **Anti-detect Browsers:** For web scraping, use tools like [Scrapfly](https://scrapfly.io/) that rotate fingerprints automatically - **Disable JavaScript:** A nuclear option that breaks most sites but prevents fingerprinting ## How to bypass web scraping bot detection [ Tutorial on how to avoid web scraper blocking. What is javascript and TLS (JA3) fingerprinting and what role request headers play in blocking. ](https://scrapfly.io/blog/posts/how-to-scrape-without-getting-blocked-tutorial/ "How to Scrape Without Getting Blocked Tutorial") [ Introduction to web scraping headers - what do they mean, how to configure them in web scrapers and how to avoid being blocked. ](https://scrapfly.io/blog/posts/how-to-avoid-web-scraping-blocking-headers/ "How to Avoid Web Scraping Blocking: Headers Guide") [ Introduction to how javascript is used to detect web scrapers. What's in javascript fingerprint and how to correctly spoof it for web scraping. ](https://scrapfly.io/blog/posts/how-to-avoid-web-scraping-blocking-javascript/ "How to Avoid Web Scraping Blocking")