Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text. Runs entirely in your browser.

About Base64 Encoding

Base64 is a binary-to-text encoding scheme that converts binary data into printable ASCII characters. It is commonly used to embed images in HTML or CSS, transmit data in URLs, encode email attachments, and store binary data in JSON or XML.

Base64 encoding increases data size by approximately 33 percent because it represents every 3 bytes of input as 4 printable characters.