Base64 Encoder & Decoder

Convert text to Base64 and back with UTF-8 support

URL-Safe

Raw Text Input

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Base64 Output

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Base64 Encoder & Decoder Online

How to use Base64 Decoder

Type or paste your text into the left Input panel.
Select 'Encode' or 'Decode' mode using the toggle.
The result appears instantly in the right Output panel.

Edge Cases & Limitations

Non-UTF-8 character sequences might cause decoding errors.

Keyboard Shortcuts

Ctrl/Cmd + K — Open Command Palette to switch tools instantly.

100% Client-Side Privacy

All inputs are processed entirely inside your browser's memory using JavaScript. No data is ever transmitted to any server. Your tokens, JSON payloads, cURL commands, and timestamps never leave your machine.