Mass Generation

Bulk UUID Generator

Generate up to 10,000 UUIDs at once. Choose your version, format, and export as TXT, CSV, or JSON. 100% client-side generation.

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Bulk Generator Features

Fast Generation

Generate 10,000 UUIDs in under a second. All processing happens in your browser using optimized JavaScript.

100% Client-Side

Nothing is sent to any server. All UUIDs are generated locally in your browser using the Web Crypto API.

Multiple Exports

Export your UUIDs as plain text (TXT), spreadsheet-ready (CSV), or structured data (JSON) formats.

Common Use Cases for Bulk UUIDs

Generating UUIDs in bulk is useful for many development and testing scenarios:

Database Seeding

Populate development or test databases with realistic UUID primary keys. Export as CSV for easy database imports.

API Testing

Generate lists of UUIDs for load testing, stress testing, or simulating multiple concurrent users/resources.

Fixture Generation

Create test fixture files with pre-generated UUIDs. Export as JSON for easy integration with test suites.

Data Migration

Generate replacement IDs when migrating from auto-increment to UUID primary keys in databases.

Which UUID Version for Bulk Generation?

Version Best For Ordering
UUID v4 General purpose, testing, most use cases Random (no order)
UUID v7 Database seeding, time-ordered data Time-sorted (lexicographic)
UUID v1 Legacy systems, audit trails Time-based (Gregorian)
GUID .NET, SQL Server, Windows Random (uppercase, braces)

💡 Recommendation

For most bulk generation needs, UUID v4 is the best choice—it's random, widely supported, and has no ordering implications. If you're seeding a database and want time-ordered IDs, use UUID v7.

Related UUID Tools

UUID v4 Random UUID v7 Time-sorted Validator Check UUIDs GUID Microsoft
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