Base64 Encoder & Decoder
Encode and decode text strings, images, and documents to Base64 format with full UTF-8 and emoji support. Preview Base64 images directly and download decoded binary files.
Input Plain Text:
0 bytes
Base64 Output:
0 bytes
What is Base64 Encoding & When to Use It?
1
Embed Images in CSS & HTML
Convert small logos, icons, and SVG assets into Data URIs to eliminate separate HTTP roundtrips and improve page performance.
2
Binary to ASCII Transmission
Safely transmit images, PDF attachments, and binary data across text-only protocols like JSON APIs, emails, and webhooks.
3
100% Private In-Browser Processing
Your confidential documents and text are converted client-side using JavaScript `FileReader`. Zero data is uploaded to remote servers.