What is this?

Every website you open can read a lot about your browser without asking. browserdb shows you that information. Individual details are harmless, but combined they can identify your browser among millions of others, even with no cookies.

WebRTC IP

WebRTC is the browser feature behind video calls. To connect you to someone, it gathers your network addresses, and a page can read them. Some browsers hide local addresses behind random .local names. A VPN can fail to cover this, which is why it's worth checking.

User agent

A text string naming your browser, its version and your operating system. Sent with every request.

Platform and languages

Your OS and your preferred languages, in order. A rare language list narrows you down quickly.

Timezone

Your timezone and offset from UTC. It can contradict your IP's location if you use a VPN.

Screen, viewport, pixel ratio, color depth

The size of your display, the size of the page area, and how sharp the screen is. Odd window sizes make you easier to recognize.

CPU threads and device memory

How many processor threads and roughly how much RAM your device reports. Chromium-based browsers round memory down on purpose to blur it.

WebGL renderer

The name of your graphics card and driver, as exposed to web pages. It is a strong hint about your exact hardware. Some browsers mask it.

Canvas fingerprint

The page draws a hidden image and hashes the result. Tiny differences in fonts, drivers and graphics hardware make that hash differ from machine to machine, so trackers can use it as an ID. If it changes on every reload, your browser is randomizing it.

Connection

An estimate of your connection type, speed and latency, where the browser supports it.

Do Not Track and Global Privacy Control

Two opt-out signals your browser can send. DNT is mostly ignored. GPC has legal weight in some regions.

Automation flag

Browsers controlled by scripts, like Selenium or Playwright, announce it here. Sites use it to spot bots.

Referrer

The page you came from, if your browser tells the site.

Color scheme, reduced motion, cookies, online

Small settings a site can read to adapt itself. They also add a few more bits to your fingerprint.

Storage quota and battery

How much space the site may use on your device, and your battery level where still supported. Many browsers now hide battery data because it was abused for tracking.

The cookie prompt

Accept saves your light or dark mode and shows your info. Decline keeps the info hidden and saves nothing. Everything is read inside your browser. The one exception is the WebRTC check, which asks a public STUN server (stun.l.google.com) which address it sees.