Base64 Encoder/Decoder
Encode and decode Base64 strings with file support
Encode to Base64
Drag & drop a file here or click to browse
Maximum file size: 5MB
Selected File:
Decode from Base64
Data URI Generator
Convert files to Data URI format for embedding in HTML/CSS
Drag & drop a file here or click to browse
Maximum file size: 2MB for Data URI
Selected File:
Operation completed successfully!
About Base64 Encoding
Base64 is a binary-to-text encoding scheme that represents binary data as ASCII strings. It's commonly used for:
• Email attachments (MIME encoding)
• Data URIs for embedding files
in HTML/CSS
• API tokens and authentication
• File uploads in web applications
Size Impact: Base64 encoding increases file size by approximately 33%. All processing happens locally for privacy.