Base64 Encoding / Decoding Tool

Base64 Encode

Standard Base64 (RFC 4648)
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Base64 Decode

Base64 Encode/Decode is a method used to encode binary data into ASCII characters for secure transmission over text-based systems, such as email or HTTP requests, where binary data may not be supported. This encoding scheme, invented by Joseph Leslie in 1993, converts binary data into a text format consisting of 64 printable characters (hence the name Base64), making it universally readable. By converting binary data into a text format, Base64 encoding allows for the safe transmission of data through channels that may not support binary data, such as email or HTML forms. Additionally, it finds application in data storage mechanisms, cryptographic protocols, and encoding binary data within text-based documents. Its simplicity and versatility have made Base64 Encode/Decode an essential tool for ensuring data integrity and security in various digital applications.

Encode Modes :

Standard Base64 (RFC 4648): This is the most widely used form of Base64 encoding. It uses a standard set of 64 characters (A-Z, a-z, 0-9, '+', '/') to represent binary data. This encoding scheme is defined in RFC 4648.

URL Safe Base64: This mode is similar to standard Base64 encoding, but it uses different characters for encoding: '-' (dash) and '_' (underscore) instead of '+' (plus) and '/' (slash). This makes it suitable for use in URLs where the characters '+' and '/' may have special meanings.

MIME Base64: MIME (Multipurpose Internet Mail Extensions) Base64 encoding is a variant of Base64 encoding used in email systems and other contexts defined by MIME standards. It is similar to standard Base64 encoding but adds line breaks every 76 characters and allows for additional padding ('=' characters) at the end.

Base64 URL encoding: This is a variation of standard Base64 encoding that replaces the '+' and '/' characters with '-' and '_' respectively, and removes any padding characters ('='). It's often used in URL and filename encoding where traditional Base64 encoding might cause issues due to special characters.

Unit Converters