Base64 Encoder & Decoder

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that represents binary data using a set of 64 printable ASCII characters. It is commonly used to embed binary data in text-based formats such as JSON, XML, HTML, and email attachments (MIME). The encoding converts every 3 bytes of input into 4 ASCII characters, making it roughly 33% larger than the original data.

Common Use Cases

Developers frequently use Base64 encoding when working with APIs that require binary data in string format, embedding images directly in CSS or HTML using data URIs, encoding authentication credentials in HTTP headers (Basic Auth), and storing binary data in databases or configuration files that only support text.