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Base64 Encoder/Decoder

Encode or decode Base64 strings instantly. Base64 encoding is used for transmitting binary data over text-based protocols, embedding data in URLs, and storing binary data in JSON. Perfect for developers working with APIs, data transmission, and web development.

Category:Encoding Tools

How to use:

  • Encode: Converts text to Base64 format
  • Decode: Converts Base64 back to original text
  • Commonly used for data transmission and embedding binary data
  • Copy or download the result

About This Tool

Base64 is an encoding scheme that converts binary data into ASCII text format. It's widely used in web development for embedding images in HTML/CSS (data URIs), encoding credentials, transmitting binary data over text protocols, and storing binary data in JSON. Base64 encoding increases the data size by approximately 33%, but ensures safe transmission across systems that only handle text.

Use Cases

  • •Encode images as data URIs for embedding in HTML or CSS
  • •Encode credentials for HTTP Basic Authentication
  • •Transmit binary data over text-based protocols (email, JSON)
  • •Store binary data in JSON or XML formats
  • •Encode file contents for API transmission
  • •Create data URLs for inline resources

Examples

Encoding text to Base64

Input:

Hello, World!

Output:

SGVsbG8sIFdvcmxkIQ==

Decoding Base64 to text

Input:

SGVsbG8sIFdvcmxkIQ==

Output:

Hello, World!

Data URI example (image)

Input:

data:image/png;base64,iVBORw0KGgo...

Output:

Decoded image data (binary)

Frequently Asked Questions

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