Base64 Encoder & Decoder FREE

Encode text or files to Base64, decode Base64 back to text or preview images. 100% local — nothing is uploaded.

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Drop a file or image to encode
Any file type – No size limit
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Input Text
Chars: 0
Bytes: 0
Base64 Output
Output will appear here…
Size: –
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FAQ

What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters. It is widely used to embed images in HTML and CSS, and transmit binary data over text-based protocols.
How do I encode text to Base64?
Select the Encode mode, type or paste your text in the Input box, then click Encode to Base64. The result appears instantly in the output panel.
How do I decode a Base64 string?
Switch to Decode mode, paste your Base64 string in the input, then click Decode from Base64. If the result is an image, a live preview is shown automatically.
Is my data uploaded to any server?
No. Everything runs entirely in your browser using JavaScript. Nothing is sent to any server. Your data stays private on your device.
Is Base64 a form of encryption?
No. Base64 is encoding, not encryption. Anyone with the Base64 string can decode it instantly. For real security, use proper encryption like AES.

Free Online Base64 Encoder and Decoder

This free Base64 encoder and decoder tool lets you instantly convert text, files, and images to Base64 and decode Base64 strings back to readable text or downloadable images, entirely in your browser.

What can you do with this tool?

  • Encode text to Base64 – Convert any string into Base64-encoded output.
  • Encode files and images to Base64 – Upload any file and get its Base64 data URI.
  • Decode Base64 to text – Paste a Base64 string and instantly reveal the original content.
  • Decode Base64 to image – If the Base64 encodes an image, a live preview is shown with a download button.

What is Base64 used for?

Base64 encoding is used to safely transmit binary data over text-based channels including embedding images in HTML and CSS, encoding email attachments, and passing binary data in JSON APIs.

Is Base64 a form of encryption?

No. Base64 is encoding, not encryption. It transforms data into a different format but does not protect it. Use proper encryption like AES for security.