Tool
Encoder and decoder
Runs entirely in your browser. Nothing you enter is sent anywhere or stored.
How to use it
Paste text, choose a format, then encode or decode.
How this works
- I convert Base64, Base64url, URL encoding, hex and HTML entities locally, using UTF-8.
- Output is shown as plain text and never rendered as HTML, so pasted markup cannot run.
- Encoding is not encryption. Anyone can decode it.