das Lesezeichen
bookmark
An object, usually a strip of paper, fabric, or leather, that is placed between the pages of a book to mark a specific place.
Ich benutze eine alte Postkarte als Lesezeichen.
I use an old postcard as a bookmark.

bookmark
Loading your saved state.
bookmark
An object, usually a strip of paper, fabric, or leather, that is placed between the pages of a book to mark a specific place.
Ich benutze eine alte Postkarte als Lesezeichen.
I use an old postcard as a bookmark.

The word consists of 'lesen' (to read) and 'Zeichen' (sign/mark). So it is literally a 'mark for reading' that shows where you want to continue reading.
Ohne Lesezeichen vergesse ich immer, auf welcher Seite ich war.
Without a bookmark, I always forget which page I was on.
You can tell from the context whether a physical or digital bookmark is meant. Words like 'Buch' (book) or 'Seite' (page) point to the physical meaning, while 'Browser' (browser), 'Webseite' (webpage), or 'speichern' (to save) refer to the digital meaning.
Kannst du mir bitte das Lesezeichen aus meinem Buch geben?
Could you please give me the bookmark from my book?
When referring to a physical bookmark, verbs such as '(ins Buch) legen' (to put/place in the book), 'benutzen' (to use), or 'verwenden' (to use) are used.
Ich lege immer ein Lesezeichen in mein Buch, bevor ich es schließe.
I always put a bookmark in my book before I close it.
With digital bookmarks in a browser, other verbs are common. You can 'speichern' (save), 'anlegen' (create), 'hinzufügen' (add), or 'löschen' (delete) a bookmark.
Diese nützliche Seite habe ich sofort zu meinen Lesezeichen hinzugefügt.
I immediately added this useful page to my bookmarks.
link
'der Link' and 'das Lesezeichen' can both have to do with a webpage on the internet. A link is a reference that you click to get to a page or file. A bookmark in the browser, on the other hand, is a saved link so that you can quickly find a page again later. The words can be confused because a digital bookmark technically leads to a webpage. The difference is practical: you can receive or send a link; you save a bookmark for yourself.

Im Browser speichert Ali die Seite als Lesezeichen, damit er sie morgen wiederfindet.
In the browser, Ali saves the page as a bookmark so he can find it again tomorrow.
Wegen der Anmeldung schickt mir die Lehrerin den Link zur Webseite.
Because of the registration, the teacher sends me the link to the website.