Base64 Encoder & Decoder

Encode UTF-8 text including emoji as Base64, or decode standard Base64 back into UTF-8 text.

Processed on your device · No file uploads

Your selected files and results are processed on this device. They are not sent to external servers or stored on our servers.

WorkspaceLOCAL PROCESSING

Loading the tool. JavaScript is required.

Instructions

How to use Base64 Encoder & Decoder

Support & FAQ

Are my inputs stored on a server?

No. Tool inputs, files and results are processed locally without uploading or storing them on our servers.

What are the limits?

Up to 100,000 input characters. Standard Base64 with UTF-8 text only; arbitrary binary and Base64URL are unsupported. Base64 is not encryption.

How does this tool work?

Enter UTF-8 text or Base64 and choose Encode or Decode.