Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text. UTF-8 safe, 100% in your browser.
🔒 Everything runs in your browser. Nothing is uploaded.
Examples
hello | aGVsbG8= | base64encode |
aGVsbG8= | hello | base64decode |
café ☕ | Y2Fmw6kg4piV | base64encode |
Y2Fmw6kg4piV | café ☕ | base64decode |
How it works
Available operations: Encode to Base64, Decode from Base64.
Everything runs locally with the same code that passes our automated correctness tests — no server, no upload.