Base64 Encoder & Decoder

What is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used when there is a need to encode binary data that needs to be stored and transferred over media designed to deal with text. This encoding helps to ensure that the data remains intact without modification during transport.

How Base64 Works

Base64 encoding converts every three bytes of binary data into four ASCII characters. It uses a 64-character alphabet (A-Z, a-z, 0-9, +, /) to represent the binary data, with '=' used as padding at the end if needed. This process increases the data size by approximately 33% but makes it safe for text-based systems.

Common Use Cases

• Email attachments (MIME)
• Embedding images in HTML or CSS (data URIs)
• Storing complex data in JSON or XML
• Basic authentication over HTTP
• Cryptographic functions
• URL shortening services

How to Use This Base64 Tool

Our Base64 encoder/decoder tool provides multiple ways to convert your data:

1. Text Conversion: Simply type or paste your text in the input field. The tool will encode or decode it in real-time if "Real-time conversion" is enabled.
2. File Encoding: Drag and drop any file or click to browse. The tool will convert the file to Base64 string.
3. Decoding: Paste a Base64 string and click "Decode from Base64" to convert it back to its original form.
4. Advanced Options: Use the format options to generate URI-safe Base64 or Data URIs for embedding directly in web pages.

Features of Our Tool

Best Practices

• Use URI-safe encoding for URLs and web applications
• Validate Base64 strings before decoding to avoid errors
• Consider data size when encoding large files (Base64 increases size by ~33%)
• Use the history feature to track your recent conversions