How it works
Encode UTF-8 text
Convert the text to UTF-8 bytes and then standard RFC 4648 Base64 with padding and no inserted line wraps. Empty input produces empty output. Whitespace in the source text is meaningful.
Base64 is reversible without a key. It is useful for representing bytes as text, not for hiding a password. This tool accepts text, not binary file uploads.
What happens to your input?
This tool does its work on this page. The site does not submit your entries or results or keep a history. However, any script allowed to run on the page could read its fields. Clearing the tool or leaving the page cannot erase clipboard entries, downloads, printouts, or screenshots. It also cannot protect you if your browser or device is compromised. Read the privacy limits.