Base64 Encoder / Decoder
Encode any text — including Unicode, emoji, and multi-line content — to Base64, or decode Base64 strings back to their original text. Commonly used for HTTP Basic Auth, JWT tokens, data URIs, and email attachments.
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Processed entirely in your browser — your data never leaves your device.
How to Use This Tool
To encode text to Base64:
- Select the Text → Base64 tab.
- Paste or type your text into the input panel.
- Optionally enable Wrap at 76 chars for MIME-compatible output.
- Click Encode, then copy or download the result.
To decode Base64 to text:
- Select the Base64 → Text tab.
- Paste your Base64 string.
- Click Decode and review the output.