See what every website
knows about you.
The moment a page opens, your browser hands over your IP, device, screen, timezone and more; this page reads all of it back to you, live.
Your browser at a glance
- BrowserReading...
- Operating systemReading...
- Public IPReading...
- ScreenReading...
- TimezoneReading...
- UniquenessReading...
Support report
Browser, version, OS, screen, timezone, language and more, for a help desk. Built on this device.
Compare before and afterSee what a VPN, extension or setting changes
- Save your baseline
Keeps the values below in this browser's local storage, on this device only. Nothing is uploaded.
Available as soon as the cards show their values.
- Turn on your VPN, extension or setting
Switch on whatever you want to test, such as a VPN, a privacy extension or a browser setting, then come back to this page.
- Compare
Reloads the page, reads every value again and lists what changed. Your baseline stays saved.
Save a baseline first.
Share a link to your resultYou pick the fields; never your IP, location or user agent
The link opens the fingerprint test with a card labelled as a shared result. It never carries your IP address, location, user agent string or fingerprint ID, and the fields travel after the "#", the part of an address browsers do not send to a server.
Preparing your link...
Browser
What your browser announces about itself on every request.Network
What your connection reveals, from your public IP to your headers.Location
What the Geolocation API can pin down, only with your permission.Display
The size, density and graphics of the screen you are reading on.Device
Hardware hints your browser exposes to any page you open.Privacy
Signals about tracking, and how identifiable you are overall.Frequently asked questions
Which website shows everything my browser reveals?
ReadMyBrowser shows what your browser reveals to websites on one page: your IP address, browser and version, operating system, screen, timezone, hardware hints and a fingerprint estimate, all read live in your own browser. Precise location only appears after you allow it, and nothing is uploaded.
What does my browser know about me?
Your browser shares its name and version, your operating system, language, timezone, screen size and graphics hardware with every site you open, without asking, and the connection itself reveals your public IP address. It only shares your precise location after you grant permission. The dashboard above shows each of these values for your own browser.
What information can websites see about my browser?
Websites can see your IP address, user agent, browser and version, operating system, screen and window size, timezone, language, WebGL renderer and CPU core count without a permission prompt. Your coordinates, zip code, address and elevation need your consent first. Firefox and Safari deliberately withhold device memory and battery status, so those cards stay blank there.
How do I see my browser fingerprint?
Open the ReadMyBrowser fingerprint test: it combines your user agent, screen, timezone, language, hardware, canvas and WebGL readings into one uniqueness estimate in bits and shows how many bits each signal adds. The bits come from this site's published entropy model, so treat the result as an estimate rather than a measurement.
Is my data uploaded when I check my browser here?
No, ReadMyBrowser reads every value inside your browser and stores nothing on a server. The only network requests are a first-party lookup that echoes your public IP address back to you and, only after you allow location, a reverse-geocoding lookup that turns your coordinates into an address.