New: a Base64 converter that doesn't mangle emoji or accents

Plain btoa() only understands one byte per character, so the moment you feed it an accented letter, a Greek word, or an emoji, it either throws or quietly corrupts your text. Our new Base64 Encode/Decode tool fixes that at the root.

• Unicode-correct — text is converted to its proper UTF-8 bytes with TextEncoder before Base64-encoding, and reversed with TextDecoder on the way back, so café 😀 encodes and decodes exactly, byte for byte.
• Two clear modes — a simple Encode/Decode toggle, no mode guessing.
• Friendly errors — malformed Base64 input gets a plain-language message instead of a cryptic browser exception.
• One-click copy — grab the result without selecting and copying by hand.
• Private by default — everything runs in your browser; nothing you type or paste is ever sent to a server.

If you’ve ever had a naive Base64 tool silently mangle a name with an accent or a message with an emoji in it, this is the version that gets it right.