Browser fingerprint check

The address you came from. A site tells your country, city and provider from it and checks everything else against it.

How to fix: Work through a proxy in the country you are supposed to be in, and keep one IP per account.

The browser can tell a site your network's addresses past the proxy. We look for addresses it gives away without asking any outside server.

How to fix: Turn WebRTC off or replace the addresses with the proxy's. An address like 192.168… shows the site your home network.

The zone the browser tells sites. Platforms check it against the IP's country: Kyiv behind a German proxy is a clear mismatch.

How to fix: Set the proxy country's zone. If the zone's name and the clock offset disagree, it was only half replaced, and the site sees that.

The languages in the browser's settings and the language it writes dates in. If they differ, the swap shows.

How to fix: Pick the proxy country's languages, or keep yours, but the same everywhere: in the language list and the interface language.

Screen size and pixel density. A rare pair helps pick you out among thousands of visitors.

How to fix: Use common sizes: 1920 × 1080, 1536 × 864, 1440 × 900. The window must not be bigger than the screen.

The browser draws an invisible picture; graphics card and fonts make it come out slightly different for each person. Sites keep its hash as a tag.

How to fix: The hash should be stable and different for every profile. If it changes on every read, the site sees noise, and that is a tag too.

The graphics card the browser names to sites. Software rendering gives away a virtual machine or automation.

How to fix: The card must fit the system: Apple on a Mac, Intel, AMD or NVIDIA on a Windows laptop. WebGL turned off entirely stands out too.

Which system fonts are installed. The set gives away the system, and rare fonts a particular person.

How to fix: Fonts must fit the profile's system: Windows fonts in a macOS profile are a mismatch.