Embeddable Password Strength Widget
A free, privacy-first password strength checker you can embed on any website with a single iframe tag. No tracking, no API key needed.
Live demo
This is exactly what your visitors will see once the widget is embedded.
Embed code
Copy this HTML snippet into your page. The iframe is responsive and works without JavaScript on the host page.
<!-- Password Strength Widget by PwdFortress (free, privacy-first) --> <iframe src="https://www.pwdfortress.com/widget/password-strength?theme=dark&lang=en" width="100%" height="260" frameborder="0" scrolling="no" title="Password Strength Checker" loading="lazy" style="border-radius:12px;max-width:520px;display:block" ></iframe> <!-- Attribution link (recommended) --> <p style="font-size:11px;margin-top:6px;color:#64748b"> <a href="https://www.pwdfortress.com" rel="noopener" style="color:inherit">Powered by PwdFortress</a> </p>
Why embed this widget?
Free, no limits
No API key, no account required. The iframe works indefinitely at no cost.
Privacy-first
All computation happens in your visitor's browser. No password ever leaves their device — ever.
Zero external dependencies
The widget is self-contained HTML. No CDN, no tracking, no third-party scripts.
Dofollow attribution link
The recommended snippet includes a 'Powered by PwdFortress' link — transparent and optional.
Recommended attribution link (optional but appreciated):
<a href="https://www.pwdfortress.com/en/tools/password-strength-checker" rel="noopener">Password strength checker by PwdFortress</a>See the full tool with HIBP breach check →
Frequently asked questions
Does the widget transmit typed passwords?
No. All strength analysis runs locally in the user's browser (inline JavaScript). No data is ever sent to PwdFortress or any third party.
Can I customise the appearance?
Yes, via the ?theme=dark or ?theme=light and ?lang=fr|en|es parameters in the iframe URL. For advanced customisation, contact us.
What iframe size do you recommend?
400×260 px minimum for the dark theme, 380×240 px for the light theme. The iframe adapts to its container.
Does the widget work on mobile?
Yes. The widget is responsive and tested on iOS Safari, Android Chrome and Firefox Mobile.
Must I credit PwdFortress?
It's not technically required, but we encourage you to include the attribution link in the snippet. It's the only thing that helps us keep this service free.