Base64 Encoder & Decoder

Converts text or files to Base64 and back, with correct UTF-8 handling (accented letters, emoji, multibyte characters), standard and URL-safe variants, invalid-Base64 detection, and download of the decoded file with a controlled MIME type. Base64 is an encoding, not an encryption method, and the tool states this explicitly.

Processed on your device, no AIhasta 25 MB por archivo

URL-safe Base64 (uses - and _ instead of + and /)

Text

Input: 0 bytes

Base64 is an encoding, not an encryption method.

The data is processed on your device and is never sent to the server.

Use cases

Embed a small image as a Data URL
Decode a Base64 token or payload
Convert a file to Base64 text to paste into a JSON document

How to use this tool

Choose the mode (text or file, encode or decode)
Paste the content or select the file
Copy or download the result

Frequently asked questions

Does Base64 encrypt or protect my information?

No. Base64 is a reversible encoding with no key at all; anyone can decode it. It shouldn't be used to protect sensitive data.

Does it work with emoji and accented letters?

Yes. The text is first encoded to UTF-8 bytes before converting it to Base64, so accented letters, ñ, and emoji encode and decode correctly.

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