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Base64 Encoder/Decoder

With our free Base64 tool, you can quickly encode or decode text and data. Ideal for email attachments, data transfer, or embedding images in HTML/CSS – free and without registration.

Enter text
How to use
  1. 1Choose 'Encode' or 'Decode' mode
  2. 2Paste your text or Base64 string
  3. 3Click the button and copy the result
Features
  • Bidirectional

    Encode text to Base64 and decode Base64 back to text.

  • Swap Function

    Swap input and output with one click for quick reversal.

  • Error Handling

    Clear error messages for invalid Base64 input.

  • Copy & Paste

    Quick copying of result to clipboard.

FAQ

What do I need Base64 for?

Base64 is used to transmit binary data as text (e.g. in JSON, XML, emails). Also for data URIs in HTML/CSS.

Can I encode files?

This tool is for text. For images, use the 'Image to Base64' tool.

Is Base64 encryption?

No! Base64 is only encoding, not encryption. Anyone can decode it back.

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Note: All processing happens in your browser. Your files are not uploaded to any server.