How it works
Exact rules, visible tradeoffs
Add printable ASCII characters, subtract exclusions and constrain the first or last character to a letter or number. The generator rejects combinations that cannot fit. No-repeat applies within each password, not across a batch.
Additional characters are allowed rather than mandatory. Construction covers enabled categories and preserves boundary rules, but does not claim uniform sampling over every constrained string. Shared links omit custom text; the recipient will need to re-enter those options.
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.