Base64 Encoder/Decoder

About Base64 Tool

Base64 is a binary-to-text encoding scheme that is widely used in software development. It represents binary data in an ASCII string format by translating it into a radix-64 representation.

Why use this tool? Developers often need to encode data (like API credentials, small images, or complex strings) into Base64 format for safe transport over protocols that are designed to handle text (like HTTP or SMTP). Conversely, you may encounter a Base64 string and need to decode it to see the original content.

This tool makes the process instant and secure. Unlike many server-side converters, this tool runs entirely in your browser using JavaScript's native encoding functions, so your sensitive strings are never sent over the internet.

Frequently Asked Questions

Is this secure for passwords?

Base64 is NOT encryption; it is encoding. It hides text from plain view but is easily reversed. Do not use it to secure passwords without hashing.

How do I decode?

Click the "Decoder" tab at the top of the tool, paste your Base64 string, and click "Decode".

Does it handle images?

This specific tool is designed for text strings. For images, please use our Image to Base64 tool (coming soon).

What happens if I decode invalid Base64?

You will see an error message indicating that the string is not valid Base64.

Is UTF-8 supported?

Yes, we use encoding methods that support standard UTF-8 characters.

Is there a length limit?

The only limit is your browser's memory, so it can handle very large strings.

Is it free?

Yes, 100% free.

Do I need internet?

Once the page loads, you can use it offline.

What is Base64 used for?

Commonly for email attachments, embedding images in HTML/CSS, and basic authentication.

Can I copy the result?

Yes, simply click the green "Copy Result" button.