Free Online Tool

Base64 Encoder & Decoder

Free Base64 encoder and decoder. Convert text to Base64 or decode Base64 strings instantly in your browser. Supports UTF-8 encoding and bulk input.

What is this tool?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII characters. It's commonly used for embedding images in HTML, encoding email attachments, and passing data in URLs.

Why use this tool?

Converting between Base64 and plain text manually requires programming. This tool handles encoding and decoding instantly, supporting full UTF-8 characters including non-Latin scripts.

Tips & Best Practices

  • Encode API keys before storing in config
  • Decode JWT token parts (they're Base64)
  • Use for data URIs in CSS/HTML
  • Works with Unicode and emoji

Frequently Asked Questions

What's the difference between Base64 and encryption?

Base64 is encoding, not encryption. It converts binary to text but provides zero security — anyone can decode it.

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