Security Tools
Password Generator
Generate strong, secure, random passwords with custom length and character options.
UUID Generator
Generate RFC 4122 and RFC 9562 compliant UUIDs (v4, v7, v1) in bulk for development, databases, and testing.
Generator Options
Generated Result
Security check: All generation happens locally in your browser. No contents are uploaded.
What is the UUID Generator?
The FreeTechLearner UUID Generator creates cryptographically secure Universally Unique Identifiers (UUIDs) conforming to RFC 4122 and RFC 9562 standards. It allows developers to generate random (v4), time-ordered (v7), and time-based (v1) IDs in bulk with custom casing, hyphens, and wrapper formats.
How to Use
- Select the UUID version you want to generate: Version 4 (Random), Version 7 (Time-ordered/Sortable), or Version 1 (Time-based).
- Choose the quantity of UUIDs to generate (from 1 to 1,000) using the slider or number input.
- Configure the casing (lowercase or UPPERCASE) and toggle hyphens.
- Choose an output style: Plain List, JSON Array, Python List, or SQL Insert Values.
- Click "Generate UUIDs" (or adjust any option to update in real-time).
- Use "Copy" to save to your clipboard, or "Download" to save as a file.
Common Use Cases
- Creating unique database primary keys (especially UUID v7 for clustered indexes)
- Generating API keys, session tokens, or transaction IDs
- Creating mocks and mock data sets for testing databases
- Setting up unique configuration identifiers in microservices architectures
Key Benefits
- 100% browser-based — no data is sent to any server
- Uses cryptographically secure randomness (Web Crypto API)
- Supports modern, database-friendly UUID v7 sortable IDs
- Generates up to 1,000 UUIDs in milliseconds
- Supports export to JSON, Python, and SQL lists
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems without significant central coordination. It is represented as 32 hexadecimal digits displayed in five groups separated by hyphens (8-4-4-4-12 format).
What is the difference between UUID Version 4, Version 7, and Version 1?
Version 4 is completely random (except for version and variant bits). Version 7 is a modern standard (RFC 9562) that combines a 48-bit millisecond timestamp with random data, making it database-friendly and sortable. Version 1 is based on the current timestamp, clock sequence, and node ID (MAC address fallback).
Is my data secure when generating UUIDs here?
Yes. All generation is done entirely on your computer using the cryptographically secure window.crypto API in your web browser. None of the generated UUIDs are sent to our servers or processed externally.
Can I generate UUIDs in bulk?
Yes. You can generate up to 1,000 UUIDs at a time. You can customize casing, remove hyphens, or format the output as a JSON array, Python list, or SQL insert statement, and easily copy or download the results.
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