[ DEV TOOL ]
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to plain text. Useful for data transmission, API authentication, and embedding binary data in text formats.
Operation Mode
Bi-directional
Processing
Client-side only
Data Safety
No storage
Instant conversionNo data retentionBidirectional
Plain Text
Base64 Output
Encoded text will appear here
About Base64
• Base64 encoding converts binary data into ASCII text format using 64 printable characters
• Commonly used in email attachments (MIME), data URLs, JWT tokens, and API authentication
• Encoded data is approximately 33% larger than the original
• This tool processes data entirely in your browser—nothing is sent to any server
• Use the swap button (⇄) to quickly reverse input and output for chaining operations