Base64 Encoder

About Base64 Encoder

Base64 shows up constantly in web development — embedding a small image directly in CSS, encoding data for a URL-safe token, preparing a payload for an API that expects text rather than binary — and while the algorithm itself is simple, getting it right for anything beyond plain ASCII text (emoji, accented characters, non-Latin scripts) trips up naive implementations more often than people expect. The Base64 Encoder handles this correctly: proper UTF-8 encoding before the Base64 conversion, so text with emoji or non-English characters round-trips exactly, not just plain English strings. It's a routine tool for developers embedding data inline, preparing values for URL parameters, or working with any system that expects Base64-encoded input. Everything runs in your browser with nothing sent to a server, which matters if what you're encoding contains anything you wouldn't want passed through a third party's servers — an API key, a config value, anything sensitive stays local.