A happy birthday certificate is a document that commemorates a person's birthday. It typically includes the person's name, date of birth, and a special message or design. Happy birthday certificates can be given to children or adults, and they can be a fun and meaningful way to celebrate a special day.
Happy birthday certificates have been around for centuries. The earliest known examples date back to the 15th century, and they were often given to children as a way to mark their birthdays. Today, happy birthday certificates are still popular, and they can be found in a variety of stores and online retailers.