Base64 Encoder / Decoder

Encode text or files to Base64 and decode Base64 strings back to plain text instantly. A free, private browser-based Base64 conversion tool for developers.

How to use

  1. Choose whether you want to encode or decode using the toggle switch.
  2. Paste your plain text or Base64-encoded string into the input area.
  3. The converted output appears instantly in the output panel.
  4. Click Copy to copy the result to your clipboard for use elsewhere.

FAQ

Is it safe to encode sensitive data with this tool?

Yes. All encoding and decoding happens entirely in your browser. Your data stays on your device and is never sent to any external server.

Does this tool support file-to-Base64 conversion?

Yes. You can drag and drop or select a file to convert it to a Base64-encoded string. Everything is processed locally in your browser for privacy.

What character encoding does this tool use?

The tool uses UTF-8 encoding by default, which supports all Unicode characters. Since processing stays in the browser, the conversion is instant and private.