Free Online Data & Security Generators
Generate UUIDs, secure passwords, mock data, hashes, and more instantly. All tools run in your browser - your data stays private and secure.
UUID Generator
Generate universally unique identifiers (UUID v4) for databases and APIs
Password Generator
Create strong, secure random passwords with customizable options
Mock Data Generator
Generate realistic test data for users, products, and posts
Base64 Encoder
Encode text to Base64 or decode Base64 strings instantly
SHA-256 Hash
Generate SHA-256 cryptographic hashes for data integrity
Why Use Online Generators?
Online generators provide instant, reliable random data for development, testing, and security purposes. Whether you need unique identifiers, secure passwords, test data, or cryptographic hashes, our tools generate high-quality results without any software installation.
Features of Our Tools
- ✓Cryptographically Secure: Using browser's built-in crypto APIs for true randomness, ensuring data integrity and security.
- ✓Instant Generation: Generate complex data points in milliseconds without relying on slow server requests.
- ✓100% Private: All generation processes occur locally in your browser, guaranteeing your input and output data is never sent to servers.
- ✓Customizable Options: Easily adjust parameters like length, character sets, data types, and format to meet your specific needs.
- ✓No Limits: Enjoy unlimited generation capabilities for testing, development, and personal security use cases.
Popular Generator Tools
UUID Generator - Generate Unique Identifiers
Generate UUID v4 (universally unique identifiers) for database primary keys, API request IDs, session tokens, and file names. Each UUID is statistically unique with 128 bits of randomness. Perfect for distributed systems and microservices.
Password Generator - Secure Random Passwords
Create strong, cryptographically secure passwords with customizable length and character types. Include uppercase, lowercase, numbers, and special characters. Essential for securing accounts, API keys, and sensitive systems. Generate bulk passwords for team provisioning.
Mock Data Generator - Realistic Test Data
Generate realistic mock data for testing applications. Create users with names, emails, and ages; products with prices and categories; blog posts with titles and authors. Perfect for populating development databases, testing UI components, and creating demo data.
Base64 Encoder/Decoder - Encode & Decode Data
Encode text to Base64 format or decode Base64 strings back to readable text. Essential for embedding images in HTML/CSS, encoding API credentials, handling binary data in JSON, and working with data URIs. Supports both encoding and decoding in one tool.
Common Use Cases
Database Development: Generate UUIDs for primary keys and unique constraints
Security & Auth: Create secure passwords and hash sensitive data
Testing & QA: Generate mock data to test application features
API Development: Generate request IDs, tokens, and test payloads
DevOps: Create secrets, API keys, and configuration values
Data Migration: Generate unique identifiers for data imports
Frequently Asked Questions
Are the generated values truly random?
Yes! We use the browser's crypto.getRandomValues() API, which provides cryptographically strong random numbers. This is the same technology used for generating encryption keys and is suitable for security-critical applications.
Can I trust the password generator for my accounts?
Absolutely. Generated passwords are created using cryptographically secure random number generation. Since all generation happens in your browser, passwords are never transmitted over the network. However, we recommend using a password manager to store generated passwords securely.
Will UUIDs ever collide (duplicate)?
UUID v4 collision is extremely unlikely. With 122 bits of randomness, you would need to generate billions of UUIDs per second for many years before encountering a duplicate. For practical purposes, UUIDs can be considered unique.
Start Generating Data
Choose a generator tool above and create random data instantly.
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