How it works
The original seven-bit alphabet
Convert characters with values 0–127 to space-separated decimal integers. Non-ASCII text is rejected rather than mislabeled. For multilingual text, use a UTF-8-capable encoding such as Base64.
Control characters may not have a visible glyph. Decimal output makes their byte values visible. The transformation is reversible and provides no secrecy.
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.