PostgreSQL UUID Generator

Generate PostgreSQL-compatible UUIDs instantly with options for versions and formats.

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About This Tool

This tool generates UUIDs (Universally Unique Identifiers) that are fully compatible with PostgreSQL databases. It supports UUID version 1 (time-based), version 4 (random), and allows customization of the output format (with or without hyphens). You can generate multiple UUIDs at once and copy them easily for use in your database schemas, applications, or testing environments. The tool is client-side, ensuring fast and secure operation without server requests.

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How to Use

Select the UUID version (v1 for time-based, v4 for random).
Choose the number of UUIDs to generate (1 to
.
Optionally, toggle hyphens on or off for the output format.
Click 'Generate UUIDs' to create the UUIDs.
View the results in a formatted list and use the copy buttons to copy individual UUIDs or all at once.

Frequently Asked Questions

Find Quick Answers

What is a UUID and why use it in PostgreSQL?

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify records in databases. PostgreSQL supports UUIDs as a data type, offering advantages like global uniqueness and no need for centralized ID generation, making them ideal for distributed systems.

What's the difference between UUID v1 and v4?

UUID version 1 is time-based, generated using the current timestamp and MAC address, which can be predictable. Version 4 is randomly generated, providing higher entropy and better security for most applications. PostgreSQL commonly uses v4 for primary keys.

Can I generate UUIDs without hyphens?

Yes, the tool allows you to toggle hyphens on or off. PostgreSQL typically stores UUIDs with hyphens, but some applications may require the hyphen-less format for compatibility.

Is this tool secure?

Yes, all UUID generation happens client-side in your browser using JavaScript. No data is sent to any server, ensuring your privacy and security.

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