Base64 encode / decode
Encode text to Base64 or decode it back — instantly, in your browser. UTF-8 safe. Nothing is uploaded.
Input
Output
Everything runs in your browser. No upload, no sign-up.
How it works
STEP 1
Pick a mode
Choose Encode (text → Base64) or Decode (Base64 → text).
STEP 2
Type or paste
Enter your text or Base64 — the result appears instantly. UTF-8 and emoji are handled.
STEP 3
Copy
Copy the result with one click. Everything stays on your device.