What is Base64 String Encoding and How Does It Work?

Base64 encoding is a string of characters that represent binary data. It consists of 64 characters. A base64-encoded string can be converted back to binary data by using the reverse function.

Base 64 is an encoding standard for machine-readable data, typically used for transferring or storing computer data in a manner that allows cross-platform exchange of data between systems with different character encodings.

Base64 provides a way for humans to read and write text-based data in binary format by using only the characters A-Z, a-z, 0-9, +, /.-

Use cases for base64 encoding:

- Encrypt your email messages with this tool

- Encode messages and files in your inbox so they can be read and/or edited on other devices

Decoding a Base64 String into a Binary String

A base64 encoded binary file, also known as an image, is formatted in such a way that it can be encoded and decoded using the base64 algorithm.

Many text-based data formats will use base64 encoding and decoding in order to transmit and store data.

This algorithm is used in many scenarios, such as:

• Encrypting data that needs to be transmitted over the Internet
• Converting text into binary data
• Converting binary data into text
• Transmitting image files (JPEG, PNG) with HTML markup

Encoding a Binary String into a Base64 String

Base64 encoding algorithm is a one-way algorithm that converts binary data into a Base64 representation.

When you encode a string using the base 64 encoding algorithm, you will get a character set of letters and numbers. This character set can be represented in an array of bytes. The number of characters in the string minus 1 determines the number of bytes in the resulting array.

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