How do you say everything is not what it seems in french?

There are a few ways to say "everything is not what it seems" in French, depending on the nuance you want to convey. Here are some options:

Formal/Literal:

* Tout n'est pas ce qu'il paraît. (This is the most direct translation and is quite formal.)

Informal/More idiomatic:

* Les apparences sont trompeuses. (This is a common idiom that literally means "appearances are deceiving.")

* Ce n'est pas ce que ça a l'air. (This means "it's not what it looks like.")

* Il y a plus qu'on ne voit. (This means "there's more than meets the eye.")

More specific:

* Il ne faut pas se fier aux apparences. (This means "don't judge by appearances.")

* La réalité est bien différente. (This means "the reality is very different.")

The best way to choose the right phrase depends on the context and the tone you want to set.