Base64 Converter

Encode text to Base64 or decode Base64 strings. Supports Unicode/Emojis. 100% Client-Side.

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Secure Base64 Encoding & Decoding

Base64 is a standard used to encode binary data (like images or encrypted keys) into ASCII text format. It is widely used in web development for passing data in URLs, embedding images in HTML, and handling authentication tokens.

Why use a client-side converter?

Security is critical. Developers often use Base64 to decode "Bearer Tokens," "JWTs" (JSON Web Tokens), or session cookies to debug applications. These tokens often contain user IDs or permissions.

If you paste these tokens into a standard online tool, you are sending your private session data to their server. FreeSoft.app processes everything in your browser. Your tokens never leave your computer.

Related Tools

Decoding a JSON Web Token? Format the result with our JSON Formatter. Need to generate a secure secret key? Use the Password Generator.

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