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Toolvica

Password Generator

Free online password generator. Create strong, secure passwords with custom length, character sets, and optional ambiguous character exclusion. 100% client-side generation.

16
Generated Password
Password Strength0 bits
Weak

Table of Contents

How to Use the Password Generator

  1. Select your desired password length using the slider or enter a number directly.
  2. Toggle which character types to include — uppercase, lowercase, numbers, and symbols.
  3. Optionally enable Exclude Similar Characters to avoid confusing lookalike characters.
  4. Click Generate Password to create a new random password. Each click produces a fresh result.
  5. Copy the password to your clipboard and use it immediately. The generated password never leaves your browser.

About Password Generator

A strong password is your first line of defense against unauthorized access. This generator creates cryptographically strong random passwords using the browser built-in Web Crypto API the same standard used by secure banking and encryption applications.

The strength of a password depends on two factors: length and complexity. Longer passwords with a mix of character types have exponentially more possible combinations, making them far harder to crack through brute-force attacks.

Your privacy is fully protected. All password generation happens right in your browser using crypto.getRandomValues. The generated password never touches any server, is never logged, and cannot be intercepted. No data is stored or transmitted at any point.

A 12-character password with all four character types has over 2^76 possible combinations — more than the estimated number of grains of sand on Earth.

Frequently Asked Questions

Are these passwords truly random?
Yes. This generator uses crypto.getRandomValues, a cryptographically secure pseudo-random number generator (CSPRNG) available in all modern browsers. It is the same technology used by banks and security applications. Unlike Math.random, which is predictable, this method produces true randomness suitable for secure passwords.
How long should my password be?
For most online accounts, a password of at least 12 characters with a mix of uppercase, lowercase, numbers, and symbols provides excellent security. For highly sensitive accounts like email or banking, aim for 16 characters or more. Each additional character multiplies the number of possible combinations many times over.
What makes a password strong?
A strong password is long, uses multiple character types, avoids dictionary words and common patterns, and does not contain personal information. The password strength indicator on this tool shows how your choices affect security the more character types you enable and the longer the password, the higher the strength rating.
Should I exclude similar characters?
This option removes characters that look alike, such as i, l, 1, L, o, 0, and O. This is useful when you need to read or type the password from printed material, or when handwriting is needed. However, excluding characters reduces the total pool, so you may want to increase the length slightly to compensate.
Is it safe to use an online password generator?
It is safe when the generation happens entirely in your browser as it does here. No password data is sent to any server, stored, logged, or transmitted. We never see your generated passwords. For maximum security, always generate passwords on a trusted device and never use public or shared computers for sensitive accounts.

Reference

Password strength evaluation is based on Shannon entropy calculated as L log2(P) where L is the password length and P is the size of the character pool. Industry-recommended minimum entropy is 64 bits for general use and 128 bits for sensitive accounts. This tool uses the Web Crypto API specification by the World Wide Web Consortium for cryptographically secure random generation.

Disclaimer

This password generator is provided as a free utility. While we use cryptographically secure random number generation, no method of password generation can guarantee absolute security. Users are responsible for maintaining the confidentiality of their passwords and for following security best practices. Toolvica is not liable for any losses or damages arising from the use of generated passwords.