Base64 Encoder & Decoder
Encode text to Base64 and decode Base64 to text instantly. Perfect for data encoding, web development, and API integration with real-time conversion and validation.
How Base64 Works
- • Converts binary data to ASCII text
- • Uses 64 printable characters (A-Z, a-z, 0-9, +, /)
- • Padding with = characters when needed
- • Increases data size by approximately 33%
- • Safe for text-based protocols and URLs
Common Applications
- • Email attachment encoding
- • Data URLs for images in HTML/CSS
- • API authentication tokens
- • Configuration file data
- • JWT token components
💡 Pro Tips
- • Base64 is encoding, not encryption - it's easily reversible
- • Use the swap button to quickly switch between encode/decode modes
- • Our tool handles UTF-8 characters properly, including emojis
- • Whitespace in Base64 input is automatically ignored
Why Use Our Base64 Tool?
🚀 Fast & Instant
Real-time encoding and decoding without server requests. Everything happens instantly in your browser for maximum speed.
🔒 Privacy & Security
Your data never leaves your browser. All encoding and decoding happens locally, ensuring complete privacy and security.
📱 Cross-Platform
Works perfectly on desktop, tablet, and mobile devices. Use it anywhere with a modern web browser.
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used in web development, email systems, and data storage where binary data needs to be transmitted over text-based protocols.
Common Use Cases
- Embedding images in HTML/CSS (data URLs)
- API authentication tokens and headers
- Email attachment encoding
- Configuration file data encoding
- URL-safe data transmission
- Database storage of binary data
- JWT token encoding and decoding
- Basic HTTP authentication
Features
🔐 Encode Text
Convert plain text to Base64 encoded string with full UTF-8 character support including emojis and special characters.
🔓 Decode Base64
Convert Base64 encoded strings back to readable text with automatic validation and error detection.
⚡ Real-time Processing
Instant encoding and decoding as you type with live preview and automatic updates without page refresh.
✅ Input Validation
Automatic validation of Base64 strings with clear error messages for invalid input and formatting issues.
📋 Copy to Clipboard
One-click copy functionality for both input and output with success notifications and error handling.
🌐 UTF-8 Support
Full Unicode support for international characters, emojis, and special symbols with proper encoding handling.
Base64 Character Set
Base64 uses a set of 64 characters: A-Z, a-z, 0-9, +, and / with = as padding. This ensures the encoded data can be safely transmitted over text-based protocols that might not handle binary data correctly.