Help What is LesS/KEY & how it works click to open

LesS/KEY is a password manager that stores no passwords. It re-generates each one on demand from your single master password plus the name of the account. The same name and master always produce the same password, so there is nothing secret to leak, sync, or back up, and you only ever remember one phrase. By default each password is six short, memorable words. That is the correct horse battery staple idea from xkcd 936, built on the classic S/KEY one-time-password scheme (RFC 2289).

Nothing leaves your device. Everything happens locally. Your master password and the passwords it generates are never sent anywhere, never stored on a server, and never logged. There is no account, no sync, and no tracking. The app is a single page plus a WebAssembly module, with its fonts bundled in. Once it has loaded, it makes no network requests at all.

#### Quick password

Type an account name and your master phrase. The password appears instantly, masked; click it (or the master) to reveal, or press Copy. The save button steps from Store (file the entry — its name and rules, never the password) to Correct (confirm this name + master); once confirmed the result shows in colour, so a typo stays black.

#### Console

The full command line; type `help` for every command. It shares the same catalog and session as the form above, so you can switch between them freely; `pb` copies a command's output to the clipboard. Your list lives only in this browser (localStorage); use Export or Import to move it yourself (for example, to and from a Notion page).

#### Naming rules

After a name you can add a length and a mode. `R` is six memorable words (the default); `C` camel; `H` hex; `B` base64; `D` digits (`U…` = upper). For example, `github 20R`. End a name with `^folder` to derive it from a parent; you still type only your one master and the whole chain is computed.

Runs the real hel engine compiled to WebAssembly, the exact same generator as the command-line tool. You can add it to your home screen and use it as an app. No server, no account, no tracking, nothing to leak.

Generate

## Quick password

Same name + master always make the same password, computed in your browser — your master stays in memory only, never stored or sent. Store saves the entry (never the password); Correct saves a one-way hash.

Name (+ optional rules)
Master password
result
Console

## All commands

The full hel command line: `ls`, `add`, `enc`, `gen`, `comment`, `correct`, `help`, … Your catalog persists in this browser (localStorage). Generated passwords are masked; click to reveal.

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### Import catalog

Paste your catalog (e.g. the text of the Notion page). Existing entries with the same name are replaced.

### Export catalog

Copy this and paste it back into your Notion page.

### Set password

Cache a master/parent password for this name (used by `enc` in its subtree). Kept in memory only.

Password

### What's new

Recent changes to LesS/KEY, newest first.