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CrunchyPass

Password Generator — Web Edition

🔒
Strong random passwords & strength analyzer. Fully featured, 100% client-side — your passwords never leave your browser.
✦ Ready to generate? Use the tool below — or read the guide first ↓
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Password Generator
Generated Password
Generation History
Test any password:
🔒 Your Privacy is Guaranteed.
CrunchyPass generates every password entirely inside your browser using the Web Crypto API. No password data is ever sent to a server — not even a character. There are no accounts, no logs, no cloud storage, and no tracking of any kind. Close the tab and every generated password is instantly gone. This is not marketing copy: it is a technical reality.  |  Terms of Service
How to Generate Secure Passwords

1. Generate

Click 🔑 Generate Password to instantly create a new password using the crypto.getRandomValues() API — the same engine browsers use for TLS. No Math.random() shortcuts here.

2. Customize

Use the Length slider or type a value between 8 and 64. Toggle a-z, A-Z, 0-9 and symbols to shape your character pool. Check "Avoid ambiguous" to skip confusing chars like 0, O, 1, l, I.

3. Passphrases

Enable Passphrase Mode for Diceware-style phrases. Choose 3–8 words and pick your separator (dash, underscore, or space). Great for memorable yet strong passwords.

4. Presets

The Presets dropdown lets you jump straight to common configs: a strong 16-char password, an ultra-secure 24-char, a 4-word or 6-word passphrase. One click, instant results.

5. History

Every password you generate is saved in the Generation History list. Click 📋 on any row to copy it, or × to remove it. Export the full list as a .txt file for safekeeping.

6. Analyze

Paste any existing password into the Test any password field and click Analyze. The terminal in the right panel will score it and show exactly what's weak or strong.

100% Client-Side

CrunchyPass uses the browser's Web Crypto API for true cryptographic randomness. There are no servers, no logs, no network requests. Close the tab and the history is gone — by design.

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🔒 Why a Client-Side Password Generator?

🕵️ Zero Exposure Risk

Server-based generators transmit your password over the network — even over HTTPS, the server sees it. CrunchyPass generates entirely in your browser. Nothing is ever transmitted.

🎲 True Cryptographic Randomness

CrunchyPass uses crypto.getRandomValues() — the same Web Crypto API that powers TLS and browser encryption. This is not pseudo-random. It is the strongest randomness a browser can produce.

🌐 Works Offline

Once the page is loaded, CrunchyPass works without any internet connection. Generate passwords on a plane, in a vault, or on an air-gapped machine. Your security workflow never depends on connectivity.

📋 No Logs, Ever

There are no server logs to subpoena, no databases to breach, no cookies tracking your sessions. Close the tab and every generated password is gone instantly — by design, not by policy.

💸 Always Free

No subscriptions. No premium unlock. No "generate 3 free passwords per day." CrunchyPass is permanently free for unlimited use, supported only by non-intrusive display ads.

🔓 Open Tech Stack

Built entirely on standard browser APIs — Web Crypto, the DOM, and plain JavaScript. No SDK, no framework, no black box. Every operation is transparent and auditable by anyone who views the source.

💡 Tips for Stronger Password Security
1
Use at least 16 characters for general accounts — modern brute-force rigs can crack an 8-character password in hours. At 16 characters with mixed character sets, the search space becomes computationally infeasible.
2
Use passphrases for things you must memorize — a 4-word Diceware passphrase like "correct-horse-battery-staple" has more entropy than most 12-character passwords and is far easier to recall. Use Passphrase Mode for these.
3
Never reuse passwords across accounts — when one site is breached (and they are, constantly), credential stuffing attacks will try your password everywhere else. Every account needs its own unique password.
4
Use the Analyze tab to test your existing passwords — paste any current password into the Test field. The terminal will score entropy, flag weaknesses, and tell you exactly what makes it strong or vulnerable.
5
Enable symbols for maximum entropy — adding !@#$%^&* to your character pool multiplies the search space. An 16-char password with all four character sets has over 95 trillion trillion possible combinations.
6
Store generated passwords in a local password manager — tools like KeePass or Bitwarden (self-hosted) let you keep strong unique passwords without memorizing them. CrunchyPass generates; your manager stores.
❓ Frequently Asked Questions
Yes — CrunchyPass is completely free with no premium tier, no usage limits, and no sign-up required. It is supported by non-intrusive display advertising.
Never. Every password is generated using crypto.getRandomValues() entirely inside your browser. No data is transmitted to any server at any point — not the password, not the settings, not even analytics about what you generated.
Most online password generators send your generated password to their server to deliver it to you. Even over HTTPS, the server receives and potentially logs your password. CrunchyPass never touches a server — generation happens locally, so there is no transmission to intercept or log.
A passphrase is a sequence of random words (e.g. "correct-horse-battery-staple") rather than a string of random characters. They offer excellent entropy while being far easier to memorize. Use them for master passwords, encryption keys, or any credential you need to type frequently.
For general accounts, 16 characters with mixed character sets is the current recommendation. For sensitive accounts (banking, email, password managers), use 24+ characters or a 5–6 word passphrase. The "Strong 16-char" and "Ultra-secure 24-char" presets are good starting points.
The terminal analyzer evaluates: password length, presence of lowercase, uppercase, numbers, and symbols, estimated entropy (bits), resistance to dictionary attacks, and common patterns. It produces a 0–100 score with a label from Weak to Excellent.
It removes characters that look similar in certain fonts: 0 and O, 1, l, and I. This is useful when you need to read or transcribe the password manually — for example, printing it or typing it on a device where you cannot paste.
Yes. Once the page has fully loaded, all password generation and analysis features work without an internet connection. Only the visitor counter and ad units require connectivity.
No. History is stored only in the browser's memory (JavaScript variables) for the duration of your session. It is never written to localStorage, cookies, or any server. Closing or refreshing the tab clears everything permanently.
CrunchyPass works on any modern browser with JavaScript and the Web Crypto API enabled: Chrome 100+, Firefox 100+, Safari 15+, Edge 100+, and Brave. Internet Explorer is not supported.
⚖️ CrunchyPass vs. Other Password Generators
Feature CrunchyPass Typical Online Generators
Password Transmitted to Server? ✔ Never — 100% local ✘ Often yes, even over HTTPS
Randomness Source ✔ Web Crypto API (CSPRNG) ✘ Varies — often Math.random()
Works Offline? ✔ Yes, once page is loaded ✘ Requires active internet
Account Required? ✔ Never ✘ Some require sign-up
Free to Use? ✔ Always free ✘ Some have usage limits
Server Logs Generated Passwords? ✔ Zero — nothing to log ✘ Unknown — depends on provider
Passphrase Support? ✔ Diceware-style, 3–8 words ✘ Rarely included
Live Strength Analysis? ✔ Built-in terminal analyzer ✘ Usually a simple bar only
⚠ Features of other tools vary. When evaluating any online password generator, always check whether it transmits your generated password to a server and what randomness source it uses.
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CrunchyPass — Terms of Service

Please Read Before Continuing

1. Acceptance of Terms. By accessing or using CrunchyPass (the "Service"), you agree to be bound by these Terms of Service. If you do not agree, discontinue use immediately.

2. Personal Use Only — Not for Commercial Work. The Service is provided strictly for personal, casual, recreational, or entertainment purposes. It is not intended, designed, or suitable for any work-related, professional, business, commercial, educational, governmental, legal, medical, financial, or official use.

IMPORTANT NOTICE: Any use of the Service for work, professional, business, or commercial purposes is strictly prohibited and is done entirely at your own risk. We assume no liability for such use.

3. Client-Side Processing. The Service operates entirely within your web browser. No password data is transmitted to or stored on any server operated by CrunchyPass or its affiliates.

4. User Responsibility. You are solely responsible for the passwords you generate and how you use them.

5. Prohibited Uses. You may not use this Service for any professional or commercial purpose, or to generate passwords for illegal activities.

6. Disclaimer of Warranties. The Service is provided "AS IS" without any warranty of any kind.

7. Limitation of Liability. To the maximum extent permitted by law, CrunchyPass, its owners, operators, and affiliates shall not be liable for any damages arising from use of the Service. Our total liability shall not exceed $0.00.

8. Governing Law. These Terms are governed exclusively by the laws of the State of Texas.

Special Notice for California Users: You expressly agree that we do not recognize California law. Texas law applies exclusively.

9. Changes to Terms. We may update these Terms at any time. Your continued use constitutes acceptance of the revised Terms.

10. Indemnification. You agree to indemnify and hold harmless CrunchyPass from any claim arising out of your use of the Service.