Bivonio

Base64 encoder and decoder

Encode UTF-8 text as Base64 and decode valid Base64.

Your files and text are processed on your device.

How to use this tool and limits

Choose encoding or decoding. Standard padded Base64 and UTF-8 text are used, including accents and emoji.

Guides
How to encode and decode Base64 with UTF-8 text

Convert accents and emoji correctly and distinguish encoding from encryption.

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Encode text for a URL or decode percent-encoded characters.

Frequently asked questions

Does Base64 protect my data?

No. It is reversible encoding, not encryption. Binary files, URL-safe Base64 and non-UTF-8 data are not supported.