UUID v4 Generator

Generate version 4 UUIDs (random UUIDs) instantly. These UUIDs are created using random or pseudo-random numbers, making them perfect for most use cases requiring unique identifiers.

Bulk UUID Generation

Enter the number of UUIDs to generate and download them as a text file. Ideal for batch processing and data management tasks.

About UUID Version 4

What is UUID v4?

UUID version 4 generates random or pseudo-random UUIDs. It uses random or pseudo-random numbers to create a 128-bit value, making it the most commonly used UUID version for applications requiring unique identifiers without any specific time or name-based requirements.

Advantages of UUID v4

True RandomnessGenerated using random or pseudo-random numbers
No DependenciesDoesn't require hardware IDs or timestamps
Collision ResistantExtremely low probability of generating duplicates
Universal UsagePerfect for most general use cases

Best Use Cases

  • Database Keys:Perfect for generating unique primary keys in databases
  • Session IDs:Ideal for creating unique session identifiers
  • Random Identifiers:Great for any scenario requiring random unique IDs
  • Distributed Systems:Excellent for generating IDs across distributed systems

Frequently Asked Questions

What is JSON Reader and how does it help developers?

JSON Reader is a comprehensive JSON toolkit that helps developers format, validate, and transform JSON data. It provides real-time formatting, validation, and conversion tools to make working with JSON more efficient and error-free.
JSON
Developer Tools
API

How do I use the JSON Diff Checker?

Simply paste your JSON data into the provided fields and click "Compare" to see the differences. Our tool highlights changes, additions, and deletions in a clear, easy-to-read format.
Diff
Comparison
API

Is JSON Reader free to use?

Yes, JSON Reader is completely free to use for all users. All our tools are available online without any registration or installation required.
Free
Open Source

What makes JSON Reader different from other JSON tools?

JSON Reader stands out with its comprehensive suite of tools, real-time validation, beautiful interface, and powerful features like JSON to table conversion, diff comparison, and multiple format conversions.
Features
Performance

How secure is my data when using JSON Reader?

Your data security is our top priority. All processing is done locally in your browser - we never store or transmit your JSON data to any servers.
Security
Privacy

Can I use JSON Reader for large JSON files?

Yes, JSON Reader can handle large JSON files efficiently. Our tools are optimized for performance and can process complex JSON structures without compromising on speed or accuracy.
Performance
Large Files