Convert strings and files to Base64 and decode Base64 strings with UTF-8 support and URL-safe formatting.
Browser Execution • Zero Server Uploads
Plain Text / Source Input26 chars • 28 B
UTF-8 String
Base64 Output0 chars • 0 B
Size ratio: +-100% (standard 4/3 overhead)
Frequently Asked Questions
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is widely used to embed images directly into HTML/CSS (Data URLs), transmit cryptographic keys, and safely pass payloads over HTTP headers and email protocols.