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Base64 Encode / Decode

Encode or decode Base64 strings instantly

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About Base64 Encode / Decode

The Base64 Encoder and Decoder converts text to Base64 encoding and decodes Base64 strings back to plain text. It runs entirely in your browser, is free, and stores no data on any server. A must-have tool for developers working with data encoding, APIs, and authentication tokens.

Frequently Asked Questions

How do I encode or decode Base64?

Paste your plain text to encode it to Base64, or paste a Base64 string to decode it back to readable text. The conversion is instant and you can copy the result with one click.

Is my data sent to a server during encoding?

No, all encoding and decoding happens entirely in your browser. No data is transmitted to any server. Your text and Base64 strings remain completely private on your device.

What is Base64 encoding used for?

Base64 encoding is used to represent binary data as ASCII text, making it safe for transmission in contexts that only support text, such as email, JSON payloads, HTML data URIs, and HTTP headers. It is also commonly used in authentication tokens and API keys.