Base64 Encoder / Decoder

Encode text or images to Base64, or decode Base64 strings back to text. Instant, free, browser-based.

Plain Text / Image0 chars
Base64 Output

What is Base64?

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. Commonly used in email, data URLs, and API authentication.

Common Use Cases

  • → Embed images in HTML/CSS as data URLs
  • → Basic HTTP authentication headers
  • → Encode binary data for JSON APIs
  • → Email attachments (MIME)