Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
base64An encoding method that converts binary data into ASCII text and vice versa. It is commonly used to send non-text files via the Internet's email system (see MIME). Base64 divides each set of three bytes of the original data into four 6-bit units, which it represents as four 7-bit ASCII characters. This typically increases the original file by about a third. See quoted printable encoding.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.