Base64 Encoder Decoder Online

About Base64 Encoder & Decoder

This free online Base64 encoder and decoder tool allows you to encode text or files to Base64 format and decode Base64 strings back to their original form. All processing happens in your browser for maximum privacy and security.

Features

• Text Encoding: Convert plain text to Base64 format with Unicode support
• Text Decoding: Decode Base64 strings back to readable text
• File Encoding: Encode any file type (images, documents, etc.) to Base64
• File Decoding: Decode Base64 back to downloadable files
• Format Validation: Real-time validation of Base64 format
• Auto-validation: Automatically validate input as you type
• Copy & Download: Copy results to clipboard or download as files
• Privacy First: All processing happens locally in your 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 for encoding data that needs to be transmitted over media designed to deal with text, such as email attachments, data URLs, and API responses.

Common Use Cases

• Email Attachments: Encode files for email transmission
• Data URLs: Embed images directly in HTML/CSS
• API Integration: Send binary data through JSON APIs
• Web Development: Encode images for inline display
• Data Storage: Store binary data in text-based databases
• Configuration Files: Include binary data in text configuration files

Base64 Encoding Benefits

• Text-Safe: Converts binary data to text-safe characters
• Universal Support: Supported by all programming languages and platforms
• Transmission Safe: Safe for transmission over text-based protocols
• Reversible: Lossless encoding that can be perfectly decoded