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Base64 Encoder & Decoder

Your essential tool for binary-to-text data conversion. Whether you're handling API keys, email attachments, or data URLs, our tool provides instant, private results without server transmission.

⚙️ Mode Selection
Encoding Mode

Converting plain text into standardized Base64 strings.

Source Input
0 chars
Output Result

Common Developer Utilities

🌐 URL Encoder {} JSON Formatter #️⃣ Hash Generator 🔑 JWT Decoder

What is Base64?

Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. It is most commonly used to encode data that needs to be stored and transferred over media that is designed to deal with textual data.

RFC 4648 Compliant UTF-8 Support Zero Server Logs

When to Encode or Decode

Base64 is essential for various digital tasks:

  • Data URLs: Embed small images directly into CSS or HTML files.
  • Email Transmission: Send binary attachments like PDFs via SMTP.
  • API Auth: Pass basic authentication credentials in headers.
  • Filename Safety: Convert forbidden characters into URI-safe strings.

Standard Implementations

PHP base64_encode('text');
JavaScript btoa('text');
Python base64.b64encode(b'text')

Warning: Base64 is NOT encryption! It is an encoding method and should never be used to secure data on its own.