Base64 Converter

Encode or decode Base64 strings and files. Base64 encoding is used to represent binary data in ASCII string format, commonly used for sending attachments in emails and embedding images in HTML.

Text Conversion
File Conversion
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Base64 Result:
Decoded File:

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How Base64 Encoding Works

1

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It uses a set of 64 characters (A-Z, a-z, 0-9, +, /) to represent binary data.

2

When to Use Base64

Use Base64 encoding when you need to send binary data through text-based systems like email, HTML, or JSON. It's commonly used for embedding images in HTML/CSS and transmitting attachments.

3

Base64 Limitations

Base64 encoding increases the data size by approximately 33%, making it less efficient for large files. It's designed for interoperability, not for security or compression.