Emmanuel Macron has promised to restore France's global standing, as he is officially inaugurated as the country's youngest president at the age of 39.
President Macron said at the elaborate Élysée Palace ceremony that his mandate will give the French back the confidence to believe in themselves,"
He vowed to see the EU "reformed and relaunched" during his time in office.
He takes over from François Hollande, whose five-year term is plagued by high unemployment figures.
Presidenrt Macron is proclaimed France's new president a week after his resounding victory over the National Front's Marine le Pen, with 66% of the vote in the run-off poll.