Different means of Tracker
There are multiple ways you can use to track someone's ip, "Email","Link","PDF","pictures".

Let's start with the Easist One

1. Your new URL. This normally seems like “https://grabify.icu/ABC123”. This would be what you can send to the person you want to get his/her location or friend. It is advised to renew the field to something else, so your target does not get to know it is a grabify link because of its fame 2.Your tracking code would be what you would enter to reach your logs. 3.Your access link is the link that benefits you to survey your logs by immediately visiting it. This can lessen you the burden of coming back to the homepage to insert your tracking code anytime you wish to inspect your logs. You might want to copy that too. Smart Logger Feature is an innovative feature that recently launched by grabify to give further information about your target. Such information covers your target’s device information, its charging state, battery percentage, his/her device’s GPU, if he/she is entering the link over a Tor exit node, if they are reaching over VPN and a whole bunch of amazing information. You surely want to get it notified.

Let's see the mail tracker

With email, sometimes the overall concept’s known as “open tracking.” “Read receipts” are a related idea. You probably haven’t seen a tracking pixel, at least not with your naked eyes, because they can literally be a single 1 x 1 pixel image buried somewhere in an email or webpage. Did we mention they’re often completely invisible, because they’re transparent? Oh, and they might actually be embedded in that image of the sender’s signature — or even the fancy font they’re using. Really, anything that sends a request to a remote server can be used as a tracking tool.
Using a customized image to find someone's IP