Base64 Encoder / Decoder
Encode and decode Base64 strings instantly. Supports Unicode and UTF-8.
Processed in your browser. Nothing is sent to the server.
What is Base64 Encoding?
Base64 is an encoding scheme that converts binary data into ASCII strings. It's widely used in email attachments, Data URIs, JWT (JSON Web Tokens), and API responses.
Note: Base64 is not encryption. Anyone can decode Base64 data. For protecting sensitive data, use proper encryption like AES-256-GCM.
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FAQ
Is Base64 encryption?
No. Base64 is an encoding scheme, not encryption. Anyone can decode Base64 data. For protecting sensitive data, use proper encryption like AES-256-GCM.
Does this tool support Unicode?
Yes. This tool handles Unicode text by encoding to UTF-8 bytes first, so Japanese, emoji, and other non-ASCII characters are correctly encoded and decoded.