How do you say come back soon in french?

There are a few ways to say "come back soon" in French, depending on the context and level of formality:

Formal:

* Revenez bientôt. (This is the most literal translation and is quite formal)

* À bientôt. (This is a common and polite way to say "see you soon" and can be used in most situations)

Informal:

* Reviens vite! (This is a more casual way to say "come back soon" and can be used with friends or family)

* À plus tard! (This means "see you later" and is a very common informal way to say goodbye)

Other options:

* On se voit bientôt. (This means "see you soon" and is a friendly way to say goodbye)

* J'espère te revoir bientôt. (This means "I hope to see you again soon" and is a more heartfelt way to say goodbye)

The best way to choose the right phrase is to consider who you are talking to and the situation.