Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings. The most common encoding for data transmission.
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data in 64 printable ASCII characters.
- • Uses A-Z, a-z, 0-9, +, and /
- • Padding with = signs when needed
- • 33% larger than original data
- • Standard for email attachments (MIME)
Common Uses
- • Email: Attachments in MIME format
- • Web: Data URLs for images/fonts
- • APIs: Binary data in JSON
- • Authentication: Basic auth headers
Tips
- • Base64 is NOT encryption - it's just encoding
- • Perfect for embedding small images in CSS/HTML
- • Supports Unicode text through UTF-8 encoding