What is Base64 used for?

Base64 encodes binary data as ASCII text for safe transmission in URLs, emails, and JSON. It increases size by ~33%.

Base64 Encoder / Decoder

Encode text or files to Base64 and decode Base64 strings back to plain text. Free online Base64 converter with file upload support for developers.

✓ Free • No Signup • Client-Side Only

Encode text to Base64 or decode Base64 back to plain text. Developers use this daily for data transfer, APIs, and tokens.

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Input text or Base64 string:

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Output:

Output will appear here