Security ToolsBrowser-only tool
This tool runs sensitive processing in your browser whenever possible, so passwords, tokens, and inputs are not sent to Security Tools servers.
Base64 Encoder / Decoder
Convert text to and from Base64 without sending the input to a server.
Encode or decode Base64
How it works
- Encode mode converts text into Base64.
- Decode mode converts valid Base64 back into text.
- Invalid Base64 input is handled with an error message.
FAQ
Is Base64 encryption?
No. Base64 is encoding and provides no secrecy.
Does it support Unicode?
Yes. The tool handles UTF-8 text.