What is Base64 encoding?

Base64 is an encoding scheme used to represent binary data in a text format using 64 ASCII characters. It is commonly used in data transfer, email attachments, and embedding binary data in text-based formats. Learn more on [Wikipedia – Base64](https://en.wikipedia.org/wiki/Base64).

Is Base64 encryption?

No. Base64 is **not encryption**—it is only encoding. It does not provide security or confidentiality, only a way to represent data in a readable format. For comparison between encoding and encryption, see [Encoding vs Encryption](https://en.wikipedia.org/wiki/Encoding).

Does this tool send my data to a server?

No. All Base64 encoding and decoding happens **locally in your browser** using JavaScript. No data is uploaded or stored on any server. This is similar to how client-side processing works in modern web applications. Learn more at [MDN Web Docs – Client-side JavaScript](https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Client-side_web_APIs).

FlowTooly

Base64 Encoder & Decoder

Encode or decode Base64 instantly in your browser. Supports text conversion with no data uploaded.

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Base64 Encoder & Decoder