Password Strength

A meter that says what to do next, not just 'weak'.

Category
Auth
Access
Free with an account
Source
101 lines · one file

When to use it

Use Password Strength under a new-password field: a meter and a checklist of rules that tick as they are met. Pass your own rules, and compromised when a breach check says so.

Installation

How you get it

Paste this into Claude Code, Cursor, Codex or any coding agent. It installs the file and uses it as it is, instead of writing a new one.

Use Liro's Password Strength for this.
Install it: npx shadcn@latest add @liro/password-strength
(the @liro registry is set up in components.json, with LIRO_KEY in .env.local)
Import it from @/components/ui/password-strength.
Do not rewrite or restyle it. Pass my data through its props
and keep its built-in states.

For the full brief with every prop and the mistakes assistants usually make, use Copy prompt above. Free components install through the @liro registry with your CLI token: see the Namespaced tab.

Usage

components/new-password.tsx
import * as React from "react";
import { PasswordInput } from "@/components/ui/input";
import { PasswordStrength } from "@/components/ui/password-strength";

export function NewPassword() {
  const [value, setValue] = React.useState("");
  return (
    <div className="grid gap-2">
      <PasswordInput value={value} onChange={(e) => setValue(e.target.value)} autoComplete="new-password" aria-label="New password" />
      <PasswordStrength value={value} />
    </div>
  );
}

API reference

“Copy prompt” above puts a full brief on your clipboard, install command, dependencies, props, and the mistakes an assistant usually makes with this component.

Props

Read from the component’s own TypeScript interface when the site is built, so this table cannot drift from the file you install.

TypeNotes
valuestring Yes–
rulesPasswordRule[] No–
compromisedboolean NoSet true when your backend reports the password in a known breach.

Dependencies

npm packages

clsxlucide-reacttailwind-merge

Liro foundations, installed alongside it

liro-theme

Accessibility

  • Keyboard reachable throughout, in visual order
  • Focus trapped in overlays, Escape closes them
  • Focus returns to whatever opened it
  • Live regions announce what changed, not that something did
  • Honours prefers-reduced-motion

Responsive behavior

  • Sizes to its container, not the viewport
  • Usable from 320px up
  • Pointer-based interaction, so trackpad and touch both work
  • No hover-only affordances