How do you say in French I am glad liked it?

There are several ways to say "I am glad you liked it" in French, depending on the context and formality:

Formal:

* Je suis ravi(e) que cela vous ait plu. (I am delighted that you liked it)

* Je suis content(e) que cela vous ait plu. (I am happy that you liked it)

* Je suis heureux(se) que cela vous ait plu. (I am pleased that you liked it)

Informal:

* Je suis content(e) que ça t'ait plu. (I am happy that you liked it)

* Je suis ravi(e) que ça t'ait plu. (I am delighted that you liked it)

* J'ai bien fait de te le montrer. (I did well to show it to you)

* C'est cool que ça te plaise. (It's cool that you like it)

For a specific thing:

* Je suis content(e) que tu aimes [le gâteau, le film, etc.]. (I am happy that you like [the cake, the movie, etc.])

* Je suis ravi(e) que tu aimes [le gâteau, le film, etc.]. (I am delighted that you like [the cake, the movie, etc.])

Choose the most appropriate expression based on the situation and your relationship with the person you are talking to.