How can a single link reveal your location and device details, as services like IPLogger demonstrate?

Question

Accepted Answer

URL-based tracking services generate a link that, when merely clicked, harvests your IP, approximate location, device type, OS, and browser — no install or explicit consent needed.
URL-based tracking services like IPLogger show how exposed users are to location tracking. Simply clicking a prepared link can extract:

IP address
Geographic location
Device type
Operating system
Browser details

This requires no software installation and no explicit consent from the user — every web request a browser makes already discloses these details to the server, and a logger link just records them and redirects you onward.
Tip: This is why "don't click unknown links" is privacy advice, not just security advice — the click alone leaks your IP and a rough location before you even land on a page.