ZeroData Tools
Tools
JSON to CSV Custom Map nested JSON arrays into clean CSV files by visually selecting the exact columns you want. JSON Formatter Format and validate JSON instantly with no uploads, no server calls, and no stored data. JSON Validator Validate JSON instantly before deploys with local processing and zero server calls. YAML Validator Validate YAML files and catch indentation errors instantly with no uploads or backend processing. Base64 Encoder Encode or decode Base64 strings instantly with zero uploads. URL Encoder Encode and decode query parameters locally for APIs, redirects, and forms. HTML Formatter Pretty-print messy markup and inspect structure without exposing page code. CSS Minifier Shrink stylesheets for production with browser-only processing and instant output.

Secure Password Generator

Generate cryptographically secure passwords in your browser. No passwords are transmitted or stored anywhere.

Password Generator
Generated using crypto.getRandomValues() — nothing leaves your browser.
Ctrl+Enter Generate
Configuration Secure random
Generated Passwords Read only output
Ready Browser only
Configure your password options and click Generate.

How ZeroData protects your privacy

  • ✓ No Uploads: Tool input is processed in your browser and is not sent to ZeroData servers.
  • ✓ No Storage: Tool input is not saved by this website.
  • ✓ No Input Tracking: Analytics never receive the text, files, keys, or credentials you process.
  • ✓ Verifiable: Disconnect from the network after the page loads; local tool processing continues without uploading your input.

How to Use the Secure Password Generator

  1. Set the desired password length using the slider (recommended: 16+ characters).
  2. Select the character types to include: uppercase, lowercase, numbers, and symbols.
  3. Choose how many passwords to generate (1 to 100).
  4. Click Generate Passwords, then copy or download the results.

Common Use Cases

  • Generating strong master passwords for password managers.
  • Creating secure, temporary passwords for new employee accounts.
  • Generating complex keys for Wi-Fi networks and routers.
  • Securing database administration and server root accounts.
  • Creating unique passwords for every online service to prevent credential stuffing.

Frequently Asked Questions

Are the generated passwords saved anywhere?

No, passwords are generated locally in your browser and are never saved or transmitted.

How long should a secure password be?

For optimal security, it is recommended to use passwords that are at least 16 characters long.

What makes these passwords secure?

They are created using cryptographically secure random number generators, making them unpredictable.

Can I exclude special characters?

Yes, the tool provides toggles allowing you to include or exclude numbers, symbols, and specific cases.

Should I memorize these passwords?

It is best to use a reputable password manager to store these complex passwords, rather than trying to memorize them.

Explore more ZeroData utilities

Related Tools

Hash Generator (Bcrypt/SHA)

Generate Bcrypt, SHA-256, and MD5 hashes locally. Never send passwords over the network.

UUID / GUID Generator

Generate secure UUIDs (v4) instantly in your browser. Perfect for database seeding.

Password Strength Checker

Check how strong your password is locally — entropy analysis, time-to-crack estimate, and zero data upload.

Bcrypt Hash Verifier

Verify bcrypt password hashes and generate new ones entirely in your browser. Your passwords never leave your machine.

API Key Generator

Generate cryptographically secure API keys locally. Supports custom prefixes, Base62 encoding, and high entropy.