Crypto SecureStrength MeterBulk Generate

How It Works

1

Set Options

Choose password length and which character types to include.

2

Generate

A secure password is generated instantly using crypto.getRandomValues().

3

Copy & Use

Copy the password with one click. Check the strength meter for security.

Frequently Asked Questions

How are the passwords generated?
Passwords are generated using the Web Crypto API (crypto.getRandomValues), which provides cryptographically secure random numbers. This is the same API used by password managers.
What makes a password strong?
A strong password is long (16+ characters) and uses a mix of uppercase, lowercase, digits, and symbols. The strength meter calculates entropy — the higher the entropy, the harder it is to crack.
What does "exclude ambiguous characters" mean?
Ambiguous characters are visually similar characters like I/l/1, O/0, S/5, and Z/2. Excluding them makes passwords easier to read and type manually.
Are generated passwords stored anywhere?
No. Passwords are generated entirely in your browser and are never sent to any server. The "recent" history only exists in your current browser session and is lost on page refresh.
Share:

About Password Gen

What this tool does

Generator tools create passwords, UUIDs, Lorem Ipsum placeholder text, QR codes, barcodes, fake data sets, random numbers, and various code snippets. Each output is generated fresh on every click using cryptographic or pseudo-random algorithms.

Why use this tool

Developers and designers constantly need test data, unique identifiers, and placeholder content during prototyping. Generating them locally avoids dependency on external APIs and keeps sensitive outputs like passwords off the network.

How it works

For security-sensitive outputs (passwords, UUIDs), the tool uses the Web Crypto API's crypto.getRandomValues(). For placeholder text, it assembles words from a built-in dictionary. QR codes and barcodes are rendered to canvas or SVG.

Pro tip

For passwords, enable all character classes and use at least 16 characters. A passphrase of 4-5 random dictionary words is equally strong and much easier to remember.

Deep Dive: Related Research

Password Security Analysis 2026: Crack Times, Entropy, and Best Practices

12,500 words · 28 min read

The Complete Guide to Cryptography & Hashing: Every Algorithm Explained (2026)

26,000 words · 55 min read

The Complete Guide to Online Privacy & Security 2026: VPN, Encryption, 2FA, GDPR & More

32,000 words · 70 min read

Explore More

Love this tool? Explore 12467+ more

Free online tools for images, PDFs, text, code, and more. All running in your browser.

Explore All Tools