Password Generator

Generate random strong passwords. Length and character types configurable.

About this tool

This tool generates strong random passwords in one click. Three features: 1) Configurable length and character types (uppercase, lowercase, numbers, symbols), 2) Cryptographically secure randomness, 3) All processing in browser—no data sent to server. Ideal for new accounts and API keys.

Tool interface

Usage

  1. Select length and character types (uppercase, lowercase, numbers, symbols)
  2. Click Generate to create random password
  3. Multiple patterns at once. Copy to use

When to use

New account passwords, dev environment temp passwords, API key/token samples.

Examples

16 chars with symbols → aB3$xK9#mP2@qL7, 32 chars alphanumeric → dev token.

FAQ

What makes a strong password?

Mix uppercase, lowercase, numbers, symbols. 12+ chars. Avoid words, birthdays, sequences (123, abc).

Recommended password length?

NIST: 8+ chars. Many services: 12+. Use 16+ for sensitive.

Benefits of random passwords?

Human passwords are predictable. Random resists dictionary and pattern attacks. Use with password manager.

Is password sent to server?

No. Generation is done in browser. Cryptographic randomness used.

Is Password Generator free?

Free to use, no sign-up required.

Is data sent to a server?

Data stays on your device; we do not store it on our servers.

Supported browsers?

Tested on recent Chrome, Edge, Firefox, and Safari.

Offline use?

Core features work offline after the first load.

vs CLI or desktop apps?

Password Generator is an install-free online alternative to CLI or desktop apps.

When to use it?

Use it when: New account passwords, dev environment temp passwords, API key/token samples.

Usage example?

Example: 16 chars with symbols → aB3$xK9#mP2@qL7, 32 chars alphanumeric → dev token.

Main features?

Length and character types configurable, Multiple patterns at once, Strong password generation

How is this different from similar tools?

Password Generator runs in the browser with no install—ideal for quick checks before heavier CLI or IDE workflows.

Search keywords

パスワード, 強力, テスト用, ランダム, 生成, パスワード 生成

Basic workflow

  1. Select length and character types (uppercase, lowercase, numbers, symbols)
  2. Click Generate to create random password
  3. Multiple patterns at once. Copy to use

Practical use cases

  • New account passwords, dev environment temp passwords, API key/token samples.
  • This tool generates strong random passwords in one click. Three features: 1) Configurable length and character types (uppercase, lowercase, numbers, symbols), 2) Cryptographically secure randomness, 3) All processing in browser—no data sent to server. Ideal for new accounts and API keys.
  • Length and character types configurable
  • Multiple patterns at once

Privacy & data handling

Data stays on your device; we do not store it on our servers.

Things to watch out for

  • Always double-check before pasting output into production
  • Try incognito if extensions break the page
  • Wait for processing on large inputs

Related learning content

Related tools

Tool set

Dev & Security Set