यूयूआईडी v4 जनरेटर
तत्काल क्रिप्टोग्राफ़िक रूप से सुरक्षित यादृच्छिक यूयूआईडी (सार्वभौमिक रूप से अद्वितीय पहचानकर्ता) प्राप्त करें।
Key Capabilities
Version 1 and version 4 UUID generation
Generate UUID v4 (random) or UUID v1 (time-based). Both versions produce RFC 4122-compliant identifiers.
Bulk generation up to 1000 UUIDs
Set a quantity and generate up to a thousand UUIDs in a single operation.
Format options for different code contexts
Output in standard hyphenated format, compact format (no hyphens), or URI format.
How to Use
Select UUID version and quantity
Choose UUID v4 (random) for most use cases, or v1 (time-based) if chronological sorting matters.
Generate and inspect
Click Generate to produce the requested UUIDs. Visually inspect the first few to confirm the format.
Copy or download the output
Use the copy-all button for a small number, or download as a .txt file for larger batches.
Common Use Cases
- Developers seeding test databasesA backend developer can generate a batch of UUIDs to use as fixture identifiers.
- System architects designing distributed message IDsA solutions architect can generate a batch to review format requirements for event sourcing.
- QA engineers creating test identifiersA QA engineer can generate unique identifiers for each test request in a Postman collection.
Frequently Asked Questions
What is a UUID v4?
A UUID v4 is a 128-bit universally unique identifier generated from cryptographically secure random numbers. The format is 8-4-4-4-12 hexadecimal characters (e.g., 550e8400-e29b-41d4-a716-446655440000). The probability of collision is astronomically low — roughly 1 in 5.3 × 10^36.
Who uses this tool professionally?
Developers generate unique database record identifiers for distributed systems. API designers create unique request/transaction IDs for logging and tracing. DevOps engineers generate unique deployment and session identifiers for infrastructure management.
How random are the generated UUIDs?
UUIDs are generated using the Web Crypto API's crypto.getRandomValues(), which provides cryptographically secure randomness from the operating system's entropy pool. These UUIDs are suitable for security-sensitive applications.
Is my UUID generation private?
Yes. UUIDs are generated locally using your browser's built-in cryptographic random number generator. No data is sent to any server.
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