Felix' Workshop

Network Inspector

No requests yet

Everything below was known to this page the moment it loaded, without asking the network anything. Every site you open learns the same. The buttons above are the parts that do send something, and none has run yet.

Known without asking anyone

The line browser estimate
Where you look like you are no lookup involved
The machine

Dull on their own, close to unique together: enough to recognise you again with no cookie and no IP address. The caption is that combination, hashed to eight characters.

Requests this page is making

0
Live every timing the browser will admit to
ResourceProtoDNSTCPTLSWaitTotalSize

Finding the address, opening the connection, agreeing on encryption, waiting for the first byte. A row of dashes is a cross-origin server refusing to share its timings. Your ISP sees every one of these, and the hostnames too.

What one lookup gives away

Nothing sent yet. Look me up hands your IP to ipwho.is and prints everything it says back.

What WebRTC leaks

A page can read the addresses your browser offers a peer connection, including ones behind your router. The leak that survives a badly configured VPN.

Software running on this computer

A page cannot read your disk, but it can knock on your own machine and time the answer. Closed ports refuse instantly, listening ones do not, and the difference names your software. Online shops have been caught doing this to visitors.

Other devices on this network

A browser cannot scan a network. It can start a connection and time how it fails, which differs between an address that answers and one that is not there. The weakest panel here, false results left in.

Everything runs in your browser. The only requests that leave it are the ones you press a button for.