Base64 Encoder/Decoder
Encode and decode Base64 locally in your browser. No upload, no signup.
Base64 workspace
Encode or decode text locally.
Input
Result
Base64 result ready
Encoding runs locally as you type.
Output
EncodedStandard12 chars
Files are processed in your browser. No data is uploaded.
Questions
Can this handle Unicode text?
Yes. The encoder and decoder use UTF-8 so normal Unicode text works locally.
Does this support URL-safe Base64?
Yes. Switch to URL-safe Base64 for JWT and URL token workflows, with optional padding on encode.
Does Utilumo upload my input?
No. This tool is designed for local browser processing and does not send your input to a server.
Do I need an account?
No. Utilumo tools are built to work without accounts or sign-in.