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Base64 Encoder & Decoder

Professional Base64 conversion tool with advanced features. Encode and decode text, files, and URLs with support for batch processing, URL-safe encoding, and real-time conversion.

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Conversions
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Characters
100%
Success Rate

Quick Actions

Text Encoding

Standard text to Base64 conversion

UTF-8 • Standard Base64

URL-Safe Encoding

URL-safe Base64 for web applications

URL-Safe • No Padding

File Encoding

Convert files to Base64 data URLs

Binary • Data URL

Batch Processing

Process multiple strings at once

Multi-line • Bulk
0 characters
UTF-8 Plain Text
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Drop files here or click to browse

Convert files to Base64 data URLs

Supported: Images, Documents, Text files
Max size: 10MB per file

Batch Processing

Process multiple strings at once (one per line)

Results

0 processed 0 successful 0 errors

Encoding Options

Security Options

Output Options

Conversion History

No conversion history yet

How to Use

Enter text or paste Base64 string, select encode/decode, and get instant results. Use auto-detect for automatic conversion.

Privacy & Security

All conversions happen in your browser. Your data never leaves your computer, ensuring complete privacy.

Fast Processing

Instant conversion with support for large texts, files, and batch processing for maximum efficiency.

Advanced Features

URL-safe encoding, file conversion, batch processing, and multiple output formats for professional use.

Understanding Base64 Encoding

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII format using 64 printable characters. It's commonly used for data transmission and storage.

  • Character Set: A-Z, a-z, 0-9, +, /
  • Padding: Uses '=' for padding
  • Efficiency: 33% size increase
  • Use Cases: Email, web, APIs

Common Applications

Base64 encoding is used in various scenarios where binary data needs to be transmitted through text-based protocols.

  • Email Attachments: MIME encoding
  • Data URLs: Embedding images in HTML/CSS
  • API Responses: JSON binary data
  • Authentication: Basic HTTP auth