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Base64 encoder and decoder

Encode text or a small file as Base64, or decode Base64 back into text. Useful for data that has to travel as plain text.

Or drop a small file to encodeUp to 8 MB. It stays on this device.

    Private by design: this tool runs in your browser. Nothing you add is uploaded.

    How to use it

    1. Paste text, or drop a file to encode.
    2. Press "Encode" or "Decode".
    3. Copy the result.
    Screenshot of the Base64 encode and decode tool on Sureno, in use
    Base64 encode and decode in use: a real screenshot of this page.

    Questions and answers

    Is Base64 encryption?

    No. Anyone can decode it. It only changes how the data is written, so it can sit inside text.

    Why did decode fail?

    The text was not valid Base64, or it was not written as UTF-8 text. Files you encode here can be decoded by this page only as text if they were text to begin with.

    Is my text uploaded?

    No. Encoding and decoding happen in your browser.

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