Base64 Encoder & Decoder

Fast and secure Base64 conversion entirely in your browser.

Conversion happens entirely in your browser. Nothing is sent to our servers.

Frequently asked questions

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is commonly used to embed image data in CSS or HTML, or to transmit data over media that only support text.

Is it safe to encode/decode sensitive data?

Yes, with this tool. Unlike many other online converters, all processing happens locally in your browser. No data is ever sent to our servers, keeping your information private.

How does this handle UTF-8 characters?

This tool correctly handles Unicode/UTF-8 characters (like emojis or non-Latin scripts) by using a robust encoding method before Base64 conversion, preventing the common "malformed URI sequence" or character corruption errors.