Base64 Encode/Decode
Encode and decode text to Base64 format.
Usage
Enter text and click Encode for Base64 or Decode to restore. Supports Unicode (UTF-8) including Japanese.
When to use
Basic auth headers, Data URIs (image embedding), API payload transfer, binary as text.
Examples
Hello → SGVsbG8=, embed image as Data URI in HTML.Tips
- Basic auth:
Authorization: Basic+ Base64(user:pass). - Data URI:
data:image/png;base64,+ Base64(image). - All processing is local. No data sent to server.