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Base64 Encoder / Decoder

Encode and decode Base64 strings and files. All processing happens in your browser.

What is Base64 Encoder/Decoder?

Base64 Encoder/Decoder converts text and files to and from Base64 encoding, with full Unicode (UTF-8) support. Base64 is a binary-to-text encoding scheme that represents binary data as an ASCII string, commonly used to embed images, transmit binary data over text-based protocols, and encode credentials.

How to Use

  1. Enter text directly or drag and drop a file into the input area
  2. Click Encode to convert to Base64, or Decode to convert from Base64 back to its original form
  3. Copy the result to your clipboard for use in your project

Use Cases

  • Encoding images for inline data URIs in CSS or HTML to reduce HTTP requests
  • Decoding Base64-encoded API responses or JWT token payloads
  • Embedding binary data (PDFs, images, fonts) directly in JSON or XML payloads
  • Encoding credentials for HTTP Basic Authentication headers

Privacy & Security

All processing happens entirely in your browser. Your data is never sent to any server. You can verify this by checking the network tab in your browser's developer tools — you'll see zero outbound requests.

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