Base64 Encoder & Decoder - Encode and Decode Base64 Online

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used for encoding data that needs to be transmitted over text-based protocols like email (MIME) or stored in text formats like JSON and XML.

Common Use Cases

• Embedding images in HTML/CSS (data URIs)
• Encoding email attachments (MIME)
• Storing binary data in JSON/XML
• Basic authentication headers
• Encoding data for URLs

URL-Safe Base64

Standard Base64 uses + and / characters which have special meaning in URLs. URL-safe Base64 replaces these with - and _ to make the output safe for use in URLs without encoding.