Base64 Decode

What is Base64

Base64 is a binary-to-text encoding scheme used to represent binary data in an ASCII string format by translating it into a radix-64 representation. It is commonly used in various applications where it is necessary to encode binary data, especially when that data needs to be stored and transferred over media designed to deal with text. This encoding helps to ensure that the data remains intact without modification during transport.

Base64 encoding schemes are commonly used in a wide range of applications, including:

• Embedding image data in HTML or CSS files.
• Encoding email attachments in MIME (Multipurpose Internet Mail Extensions) format.
• I am encoding data in web applications to make binary data safe to transmit in places where text is expected, such as in hidden form inputs or URLs.

The Base64 alphabet includes the characters A, a-z, 0-9, plus (+), and slash (/) for 64 characters. It also includes padding with the equals sign (=) at the end of the encoded data to make the output length a multiple of 4, which is necessary for decoding purposes.

Base64 encoding takes three bytes of binary data and converts them into four bytes of text from the Base64 alphabet. This results in an increase in the data size by approximately 33%. Despite the increase in size, Base64 is highly useful for safely transmitting binary data in environments limited to text.