Base64 Encoder / Decoder

Encode and decode Base64 strings online. Free Base64 converter tool for developers.

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used to embed image data in HTML/CSS, send binary data over text-based protocols like email (MIME), and encode credentials in HTTP Basic Authentication. Our tool encodes and decodes Base64 strings instantly in your browser with full Unicode support.

What is Base64 Encoding and How Does It Work?

Learn what Base64 encoding is, how it works, when to use it and common use cases for developers. A complete beginner-friendly guide.