{ }Devtool
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Base64 Encode / Decode

Free online Base64 encoder and decoder. Convert text to Base64 and decode Base64 to text directly in your browser. Fast, private, no uploads — everything runs client-side.

Text input

Output

In: 15 chars · Out: 20 chars

How to use

  1. Paste input or drop a file above.
  2. Adjust options (delimiter, dialect, quality, ratio).
  3. Copy result or download — no sign-up needed.

FAQ

Is my data uploaded?

No. Encoding and decoding run 100% in your browser via TextEncoder and atob/btoa. Nothing leaves your device.

Does it support Unicode?

Yes. Input is encoded as UTF-8 bytes, so emoji and non-Latin scripts work correctly.

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