8 Best Free Password Generators Online (2026) — Tested & Compared
March 22, 2026 · 9 min read
A weak password is the easiest entry point for attackers. But not all password generators are equal — some use weak randomness, others send your generated password to a server (defeating the purpose), and many are buried under ads.
I tested 8 free online password generators on what actually matters: randomness quality (do they use crypto.getRandomValues() or just Math.random()?), privacy (client-side or server-side?), and customization (length, character sets, exclusions).
Quick Comparison
| Tool | Crypto RNG | Client-Side | Max Length | Custom Char Sets | Bulk Generate |
|---|---|---|---|---|---|
| UtilShed | Yes | Yes | 128 | Yes | Yes (10) |
| 1Password Generator | Yes | Yes | 100 | Limited | No |
| Bitwarden Generator | Yes | Yes | 128 | Yes | No |
| LastPass Generator | Yes | Yes | 99 | Limited | No |
| Norton Password Generator | Yes | Yes | 64 | Limited | No |
| Random.org | Atmospheric noise | No | 24 | No | Yes (100) |
| Avast Password Generator | Yes | Yes | 50 | Limited | No |
| Strong Password Generator | Unknown | Yes | 2048 | Yes | Yes |
Tool-by-Tool Breakdown
1. UtilShed Password Generator
Best for: Developers who need full control over character sets and want guaranteed privacy.
Uses the Web Crypto API (crypto.getRandomValues()) for cryptographically secure randomness. Runs entirely in the browser — no network requests. Supports uppercase, lowercase, numbers, symbols, and custom exclusion of ambiguous characters (0/O, l/1/I). Generate up to 10 passwords at once.
Pros: Crypto-grade randomness, 100% client-side, configurable character sets, bulk generation, password strength indicator, one-click copy.
Cons: No passphrase mode (word-based passwords), no pronounceable password option.
Open Password Generator →
2. 1Password Generator
Best for: Users who want passphrase generation alongside random passwords.
1Password's standalone generator works without an account. Offers both random character passwords and word-based passphrases (e.g., "correct-horse-battery-staple"). Passphrase mode is a big differentiator — easier to type on mobile.
Pros: Passphrase mode, memorable password option, clean UI, trusted brand.
Cons: Limited character set customization, pushes you toward 1Password signup, max length 100.
3. Bitwarden Generator
Best for: Open-source advocates who want verifiable security.
Bitwarden's generator is part of their open-source password manager. Full character set control, passphrase mode with configurable word count and separator. Being open-source means you can audit the randomness implementation yourself.
Pros: Open source, passphrase mode, full customization, 128 char max, no account required for generator.
Cons: UI is functional but not polished, generator is somewhat buried in their site.
4. LastPass Generator
Best for: Quick password generation with minimal options to think about.
Simple, no-frills generator. Toggle uppercase, lowercase, numbers, symbols. The "easy to say" and "easy to read" presets are useful for passwords you need to dictate over the phone.
Pros: Simple presets ("easy to say", "easy to read"), fast, widely known.
Cons: Max 99 characters, limited customization, heavy LastPass upselling, some trust issues after past breaches.
5. Norton Password Generator
Best for: Non-technical users who want a recognizable brand.
Norton's generator is straightforward — set length, toggle character types, copy. Norton's brand carries trust with mainstream users even if developers prefer more configurable options.
Pros: Trusted brand, simple interface, fast.
Cons: Max 64 characters, no passphrase mode, no bulk generation, Norton product promotion throughout.
6. Random.org
Best for: Users who want hardware-derived randomness (atmospheric noise) over algorithmic PRNG.
Random.org uses atmospheric noise as its entropy source, which is technically different from (though not necessarily better than) the Web Crypto API. Unique selling point is the ability to generate up to 100 passwords at once — useful for provisioning.
Pros: True hardware randomness, bulk generation (100+), well-documented methodology.
Cons: Server-side (passwords are generated on and transmitted from their servers), max 24 chars, no character set customization, dated UI.
7. Avast Password Generator
Best for: Quick one-off password generation with minimal friction.
Clean interface from Avast. Generates a single password with toggles for character types. Nothing remarkable, but nothing broken either.
Pros: Clean UI, fast, no account required.
Cons: Max 50 characters, no bulk generation, no passphrase mode, Avast product promotion.
8. Strong Password Generator (strongpasswordgenerator.com)
Best for: Generating very long passwords or in bulk.
Allows passwords up to 2048 characters and bulk generation. The randomness implementation isn't clearly documented, so it's unclear whether it uses the Web Crypto API or a weaker PRNG.
Pros: Very high max length (2048), bulk generation, custom character sets.
Cons: Unclear randomness source, heavy ads, dated interface.
What Makes a Good Password Generator?
Three things matter more than anything else:
1. Cryptographic randomness. The generator must use crypto.getRandomValues() (Web Crypto API) or equivalent — not Math.random(). Math.random() is a PRNG (pseudorandom number generator) seeded from a predictable state. It's fine for shuffling a playlist, not for generating passwords.
2. Client-side execution. If the generator sends your password over a network — even over HTTPS — it exists somewhere outside your machine. A client-side generator means the password is born in your browser and dies when you close the tab (unless you copy it).
3. Sufficient length and character diversity. A 16-character password using uppercase + lowercase + numbers + symbols has ~105 bits of entropy. That's currently infeasible to brute-force. Below 12 characters, you're in the danger zone for offline attacks.