Encode or decode Base64 strings instantly in your browser. No data is sent to any server.
Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used for encoding data that needs to be transmitted over text-based protocols.
Encoding: Converts text or binary data into Base64 format using characters A-Z, a-z, 0-9, +, and /.
Decoding: Converts Base64-encoded strings back to their original text format.
Use cases: Email attachments, embedding images in HTML/CSS, data URLs, JWT tokens, API authentication, storing binary data in JSON/XML, transmitting data over HTTP headers.