Base64 encoder

Base64 encoder

Base64 is a binary-to-text encoding scheme that's commonly used to encode binary data, such as images, audio files, and other types of data, into a format that can be safely transmitted over text-based protocols or stored in text-based files. A Base64 encoder is an online tool that performs this encoding process.

Binary data consists of sequences of bits that can represent a wide range of values. However, when you want to transmit binary data over channels that are designed for text, like email or URLs, problems can arise because not all binary data can be reliably transmitted in these contexts. For instance, some characters in binary data might be treated as special control characters or may not be properly displayed.

Base64 encoding solves this problem by converting binary data into a text-based representation that consists of a limited set of ASCII characters (usually letters, digits, and a few symbols). It achieves this by grouping sequences of 3 bytes (24 bits) of binary data into sets of 4 characters from the Base64 character set.

Here's a simplified overview of how Base64 encoding works:

  • Divide the binary data into chunks of 3 bytes each.
  • Convert each chunk of 3 bytes into a group of 4 characters from the Base64 character set.
  • If the binary data isn't evenly divisible by 3, padding characters (usually "=") are added to make sure the final text length is a multiple of 4.

When you want to decode the Base64-encoded text back to its original binary format, you use a Base64 decoder. This process reverses the encoding steps, converting each group of 4 characters into 3 bytes of binary data.

Base64 encoding is widely used in various applications, such as embedding images in web pages, transmitting binary data over email or other text-based protocols, and storing binary data in JSON or XML formats. Many programming languages provide built-in functions or libraries to perform Base64 encoding and decoding operations.

Similar tools

Base64 decoder

Decode Base64 input to back to string.


Popular tools