code
Base64 Codec code
Encode and decode data into Base64 format with high precision. Support for standard and URL-safe variants with real-time processing.
URL-Safe
Plain Text
Base64 Output
security
Client-Side Processing
Data is processed entirely in your browser. No information is transmitted or stored on our servers.
info
URL-Safe Variant
Standard Base64 replaces "+" and "/" characters with "-" and "_" to make the output safe for web URL parameters.
memory
Buffer Limit
Optimized for strings up to 5MB. Larger files may slow down your browser.
Encoding Algorithm
RFC 4648
Character Set
UTF-8 / ASCII
Processing Latency
< 1.2ms
Output Size Ratio
~133%