Are generated passwords stored anywhere?

No. Passwords are generated entirely in your browser and never sent to any server, logged, or stored in any database. Each generation is one-shot — once you close the tab, the password is gone unless you've saved it elsewhere yourself (in a password manager, ideally).

What makes a strong password?

Strong passwords are: long (16+ characters minimum, 20+ recommended), random (not based on words, dates, or patterns), and include character variety (uppercase, lowercase, numbers, symbols). Length matters most — a 20-character random password is far stronger than a 12-character one with extra symbol types. Avoid reuse across sites.

Can I customize the character types?

Yes. Toggle uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and special characters on or off based on the site's password requirements. Some sites disallow certain symbols; others require all four types. The strength indicator updates in real-time to show how secure your settings produce.

Is the password truly random?

Yes. crypto.getRandomValues uses the operating system's entropy source (e.g., /dev/urandom on Linux, CryptGenRandom on Windows) which is suitable for cryptographic purposes. The output is statistically indistinguishable from true randomness — no patterns, no sequences, no biases. Passwords generated identical-character pools have equal probability.

How long should a password be?

16 characters is a solid minimum for important accounts. 20+ characters with full character mix is excellent for high-value accounts (email, bank, password manager master password). For low-value accounts where typing is frequent, 12 characters is acceptable. Length matters more than complexity for cracking resistance — every additional character roughly doubles the time to brute-force.

What does the strength indicator measure?

It estimates the time needed to brute-force the password assuming a sophisticated attacker with massive computing resources. The estimate considers password length, character pool size (which character types are enabled), and entropy bits. Stronger ratings (Very Strong, 90+ bits entropy) are recommended for any account containing financial, personal, or sensitive data.

Can I exclude similar-looking characters?

Yes — many generators offer options to exclude visually ambiguous characters like 1/l/I, 0/O, etc. This is useful if you'll be typing or transcribing the password manually. For password manager-stored passwords, leave all characters enabled for maximum entropy.

Password Generator

Generate secure random passwords with custom length, uppercase, lowercase, numbers, and special characters. Free online password tool.

Generators Developer Tools

Instant results

Generated Password

Password Length: 16

464

Character Types

Uppercase (A-Z)Lowercase (a-z)Numbers (0-9)Symbols (!@#$%)

Advanced Options

Exclude similar characters (i, l, 1, O, 0)Exclude ambiguous symbols

Secure Generation: Passwords are generated using cryptographically secure random numbers. Everything happens in your browser - we never see or store your passwords.

Password Tips:

Use at least 16 characters for important accounts
Never reuse passwords across different sites
Consider using a password manager
Enable two-factor authentication when available

How to Use Password Generator

Set password length

Use the slider to set your desired password length. We recommend at least 16 characters for strong security.

Choose character types

Toggle uppercase letters, lowercase letters, numbers, and special characters on or off based on the site's requirements.

Generate password

Click the Generate button to create a random password. The strength indicator shows how secure it is.

Copy your password

Click the Copy button to copy the generated password to your clipboard for use in your account.

When to Use Password Generator

Creating master passwords for password managers

Your password manager's master password is the single point of failure — it must be uncrackable. Generate a 20-30 character password with full character mix, then memorize it through repetition or a passphrase trick. This master protects every other account, so spend the time to make it bulletproof.

Setting strong unique passwords per site

Reusing passwords across sites is the #1 way credentials get compromised. When one site has a breach, attackers try the leaked credentials everywhere else. Generate a unique 16+ character password for each account, store in a password manager, and you're protected even when sites get breached (unfortunately, frequent).

Generating API keys, tokens, and secrets

Backend services need secure random tokens for API keys, session secrets, JWT signing keys, and encryption salts. Use this generator (or its variant Random String Generator) for one-shot creation of high-entropy strings. For programmatic generation in production, use server-side crypto.randomBytes — but for local dev/staging configs, generation here is fine.

Creating temporary passwords for shared accounts

Need to share access temporarily — a guest WiFi password, a one-day demo account, a test environment login? Generate a strong password here, share via secure channel (encrypted message, password manager sharing feature), then rotate after the access window. Avoid reusing memorable patterns that could be guessed.

Password Generator Examples

Standard 16-character password

Input

Length: 16, all character types enabled

Output

Kj9$mQ2nB#7vXp4!

A balanced default for most accounts. Includes uppercase (K, Q, B, X), lowercase (j, m, n, v, p), numbers (9, 2, 7, 4), and symbols ($, #, !). 16 characters with all four types provides ~95 bits of entropy — sufficient resistance against brute-force attacks even from well-funded adversaries.

High-security 24-character password

Input

Length: 24, all character types enabled

Output

P!8mZ2$qTk@9rX#hVw5%dNn3

For accounts containing sensitive data (banking, health records, employer accounts), longer is better. 24 characters with full character mix produces ~150 bits of entropy — beyond any plausible brute-force capability. Use a password manager to autofill so length doesn't impact daily usability.

Memorable-format passphrase

Input

Pattern: words separated by digits

Output

Correct-7-Horse-Battery-9-Staple

An alternative to random characters: random word combinations (popularized by xkcd 936). Easier to type, type-able from memory if absolutely necessary, and still highly secure if you use 4+ random words from a large dictionary. Some password generators offer this mode; otherwise pick four random uncommon words and add digits between them.

Tips & Best Practices for Password Generator

1.Always store generated passwords in a password manager (1Password, Bitwarden, KeePass, Apple Passwords). Don't type them manually — the friction makes you choose shorter, weaker passwords. Password managers eliminate the readability vs. security tradeoff.
2.For accounts you might need to type manually (devices logging in, displays, shared computers), use a slightly shorter (14-16 char) password without similar-looking characters (no 0/O, 1/l/I, 5/S). The slight entropy reduction is acceptable when typing accuracy matters.
3.Don't reuse passwords across sites — even with strong passwords. Credential stuffing attacks try leaked passwords from one breach against all major services. Unique passwords per site mean a breach at one site doesn't compromise others.
4.Enable two-factor authentication (2FA) wherever available, especially with TOTP apps (Authy, Google Authenticator, 1Password) rather than SMS. Even if your password leaks, 2FA stops attackers from logging in. The combination of strong password + 2FA is essentially impenetrable.
5.Rotate passwords if you suspect compromise (a breach notification, an unrecognized login alert, a suspicious email). Don't rotate on arbitrary schedules — modern security guidance (NIST, CISA) recommends event-driven rotation rather than time-based, since forced rotation often produces weaker patterns.
6.For very high-value accounts (master password, email, bank, password manager), consider memorizing the password rather than relying solely on a manager. Use a strong passphrase you can recall, or write it on physical paper stored in a safe — physical security is sometimes better than digital for the most critical credentials.

Frequently Asked Questions

It uses your browser's built-in cryptographic random number generator (crypto.getRandomValues) to create truly random, secure passwords. This is the same source of randomness that browsers use for HTTPS connections — far more secure than Math.random() or pseudo-random algorithms used by less rigorous tools.

Password Generator

How to Use Password Generator

Set password length

Choose character types

Generate password

Copy your password

When to Use Password Generator

Creating master passwords for password managers

Setting strong unique passwords per site

Generating API keys, tokens, and secrets

Creating temporary passwords for shared accounts

Password Generator Examples

Standard 16-character password

High-security 24-character password

Memorable-format passphrase

Tips & Best Practices for Password Generator

Frequently Asked Questions

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