What is linkedin hook?

The available space is smaller than people think. Desktop shows about five lines and mobile about three, and line breaks consume that budget just like words: a hook written one sentence per line gets cut sooner than the same text run together.

The patterns that work share one thing: they open something without closing it. A contrast between what you believed and what turned out to be true, a concrete number left unexplained, your own mistake with the lesson still withheld. What does not work is opening with context («after thinking it over a lot, I wanted to share…»), because it spends the line saying nothing.

A method note: it nearly always works better to write the whole post, find the strongest sentence and move it to the top, than to try drafting the hook first.