Advanced Base64 Encode/Decode Tool

Easily encode text to Base64 or decode Base64 back to readable text. Fast, secure, and user-friendly interface.

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About Base64
Usage Examples
Tool Features

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation. It is commonly used when there is a need to encode binary data that needs to be stored and transferred over media designed to deal with text.

How Base64 Encoding Works

The encoding process involves:

  1. Dividing the input bytes into groups of 3 bytes (24 bits)
  2. Splitting each 24-bit group into four 6-bit chunks
  3. Converting each 6-bit chunk to a corresponding Base64 character
  4. Adding padding characters (=) if the input isn't divisible by 3

Common Use Cases

  • Embedding binary data in JSON or XML
  • Including images directly in HTML/CSS (data URLs)
  • Encoding credentials for Basic Authentication
  • Storing binary data in databases that only accept text
  • URL shortening services

Example Encodings

"Hello" encodes to SGVsbG8=

"Base64" encodes to QmFzZTY0

"123" encodes to MTIz

Tool Features

  • Instant Base64 encoding and decoding
  • Clean, modern user interface
  • Real-time character counting
  • Copy results with one click
  • Detailed error messages for invalid inputs
  • Responsive design works on all devices
  • Educational information about Base64
  • Quick clear functionality