Base64 Encoder / Decoder
Encode and decode Base64 strings. Supports UTF-8 and URL-safe mode.
Input: 0 chars
·
0 bytes
·
Output: 0 chars
About this tool
Everything runs in your browser — nothing is sent to a server. Handles full UTF-8 input (emoji, CJK characters, etc.). URL-safe mode replaces + with -, / with _, and strips padding, per RFC 4648 §5.