Wachtwoord Lek Checker — Gratis online tool
Controleer of je wachtwoord in een datalek zit
Check of je wachtwoord gelekt is in een datalek. Via HaveIBeenPwned k-anonymity API — je wachtwoord verlaat nooit je browser. Gratis.
📚 Meer weten
Free password breach checker — HaveIBeenPwned integration
Check if your password has been leaked in a data breach. Uses HaveIBeenPwned\'s k-anonymity API — your password never leaves your device. Database contains 850M+ leaked passwords from real breaches.
How to use this tool
- 1
Type your password
Enter the password you want to check. We hash it locally — only the first 5 characters of the hash ever leave your browser.
- 2
Check against breach database
We query HaveIBeenPwned's k-anonymity API — the world's largest leaked password database (850M+ breached passwords).
- 3
If leaked: change immediately
Any password showing as leaked = change it everywhere you use it. Leaked passwords are in attacker dictionaries.
What to do if your password is breached
- Change it immediately at every site where you use it
- Never reuse passwords across sites — use a password manager
- Enable 2FA on email, banking, social accounts
- Generate new passwords with our Password Generator (16+ chars, all categories)
Frequently Asked Questions
Is my password sent to anyone?
What is HaveIBeenPwned?
If my password isn't in the DB, is it safe?
My password was leaked 100 times — meaning?
Why SHA-1 and not SHA-256?
Can I test multiple passwords?
Belangrijkste punten
- Password Breach Checker is a free, browser-based developer tool — check if your password has been in a data breach.
- Nee signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Password Breach Checker
- Open the tool: Launch Password Breach Checker on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Password Breach Checker — Quick Facts
- Prijs
- Gratis — geen limieten, geen watermerk, geen paywall
- Privacy
- 100% in de browser — geen data verlaat je apparaat
- Platform
- Elke moderne browser — desktop, tablet of mobiel
- Categorie
- Developer Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Functie | Details |
|---|---|
| Tool | Password Breach Checker |
| Categorie | Developer |
| Aanmelden vereist | Nee |
| Bestand uploaden | Geen — verwerkt in browser |
| Mobiel ondersteund | Volledig responsive |
| Kosten | Voor altijd gratis |
Why Use Password Breach Checker?
You should try Password Breach Checker for a quick, private way to check if your password has been in a data breach. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.