About This Base64 Encoder/Decoder
Our free Base64 encoder/decoder tool allows you to quickly convert text to Base64 encoding or decode Base64 strings back to plain text. Base64 is a binary-to-text encoding scheme that's widely used in web development, email systems, data URIs, and APIs. This tool provides instant encoding and decoding with automatic validation, all processed securely in your browser without any server communication.
Features
Encode text to Base64 format
Decode Base64 strings to text
Automatic real-time encoding/decoding
UTF-8 text support
Base64 validation on decode
One-click copy to clipboard
Swap function to reverse operations
Character count for input and output
Clear function to reset
All processing done client-side
Benefits
Fast and instant results
Privacy-focused - no server uploads
Works completely offline
No file size limits
Free with unlimited use
No registration required
Mobile-friendly interface
Automatic UTF-8 handling
Error detection and validation
Safe for sensitive data
Common Use Cases
Encoding data for URLs and APIs
Email attachment encoding
Embedding images in HTML/CSS (data URIs)
Storing binary data in JSON
Basic authentication headers
Encoding credentials for configuration files
Web development and debugging
Testing API requests and responses
Converting binary files to text
Obfuscating simple text (not encryption!)