There are many ways to say “you're welcome” in French. This will depend on the context in which you say the phrase and to whom you say it, whether in a formal or informal situation.
Steps
Method 1 of 4: Use Common Responses to "Thank You"

Step 1. Say “Je t'en prie” when you want to say “you're welcome” in response to “thank you
” "Je t'en prie" is pronounced "ye ten pri" which literally means "you're welcome."

Step 2. Say “De rien” when you want to say “you're welcome” in response to “thank you”
“De rien” is pronounced “de gri an” which literally means “There is nothing to be thankful for”. This phrase is normally used to respond to someone who thanks you for opening the door or picking up an object that has fallen.
Method 2 of 4: Say “you're welcome” informally

Step 1. Say “Il n'y a pas de quoi” when you want to say “you're welcome” to your friends or family
This is the informal way of saying “you're welcome” and can be shortened to “Pas de quoi”. The correct pronunciation is “il ni a pa do kua” which literally means “It is nothing”.
Method 3 of 4: Say “you're welcome” formally

Step 1. Say “Je vous en prie” when you want to say “you're welcome” to strangers or formal acquaintances
"Je vous en prie" is pronounced "ye vus en pri" and means "The pleasure is mine" or "Don't even mention it."
Method 4 of 4: Say "you're welcome" when giving gifts

Step 1. Say “Avec plaisir” when you want to say “you're welcome” in response to “thank you” when giving presents or gifts
"Avec plaisir" is pronounced "a vec ple zir" which literally means "it has been my pleasure."