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📁 Base64 File Converter
Convert files to and from Base64 encodingConvert files to Base64 encoding for safe transmission and storage, or decode Base64 back to original files. Supports image preview and automatic file type detection.
Base64 to File
File Name
Extension
Base64 Input
File to Base64
Upload File
Drag and drop a file here, or click to select a file
Click to select a file
Base64 Output
Usage Guide
Upload or Input
Upload a file or input Base64 string
Choose Direction
Select conversion direction
File to Base64Base64 to File
Convert and Download
Convert and download or copy result
Features
🔄Bidirectional conversion between files and Base64
🖼️Image preview for supported formats
🔍Automatic file type detection
📁Support for all file types
⚡Fast and secure local processing
🔒No server storage, complete privacy
Technical Introduction
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used for encoding binary data in text-based protocols.Binary data encoding for text transmission
Email attachments and MIME types
Data URLs and web storage
Best Practices
Follow these guidelines for optimal Base64 usage and security.Use for text-based protocols only
Consider size increase (33% overhead)
Validate input before processing
Base64 encoding increases file size by approximately 33%. Large files may take longer to process. All processing is done locally in your browser for maximum privacy and security.