Base64 Encoder & Decoder

Encode plain text to Base64 or decode Base64 back to readable text instantly using this free online Base64 converter tool.

⚠️ Note: Base64 encoding is not encryption. Do not use it to protect sensitive data.

What is Base64?

Base64 is an encoding technique used to convert binary or text data into ASCII string format. It is commonly used in APIs, authentication headers, email attachments, data URLs, and web development applications.

Common Use Cases

  • Encoding API keys and authentication tokens
  • Embedding images directly in HTML or CSS
  • Transferring binary data over text-based protocols

FAQs

Is Base64 encoding secure?

No. Base64 is reversible and should not be used for security or encryption purposes.

Why is my decoded text unreadable?

The input may not be valid Base64 or may represent binary data instead of plain text.

Can I encode files?

This tool currently supports text-based encoding and decoding.