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UUID & Nanoid Batch

A clean list of UUIDs, nanoids, or short-ids — one per line, ready to copy.

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A clean, cryptographically-plausible list of UUID v4, nanoid, or short-ids, delivered one per line and ready to copy-paste into your project. Specify your desired count and ID type for immediate use.

Who it's for

  • Developers needing unique identifiers for database records
  • Engineers generating session tokens or API keys
  • QA testers requiring distinct IDs for test data
  • System architects designing distributed systems
  • Anyone needing cryptographically secure, bare IDs in bulk

Use cases

  • Populating a database with unique primary keys
  • Creating a batch of secure, random session IDs
  • Generating unique identifiers for distributed system components
  • Preparing test data with distinct, non-guessable IDs
  • Assigning unique tracking codes to events or users
  • Needing multiple UUIDs for a new microservice deployment

FAQ

What is the difference between UUID v4 and nanoid?

UUID v4 is a standard 128-bit identifier, while nanoid is a shorter, URL-friendly ID. Both are designed to be cryptographically plausible and suitable for generating unique identifiers.

How can I get cryptographically secure UUIDs without trusting a sketchy website?

Harnests provides cryptographically-plausible random IDs, ensuring they are suitable for security-sensitive applications without relying on unknown online generators. You receive a bare list of IDs directly.

When should I use UUID v4, nanoid, or short-id?

Use UUID v4 for standard 128-bit unique identifiers, nanoid for shorter, URL-safe IDs, and short-id for even more compact, custom-length identifiers. The choice depends on your specific length and character set requirements for your project.

How many IDs can I generate at once?

You specify the exact count of IDs you need as an input. Harnests delivers a clean list of your chosen ID type, one per line, ready for immediate use in your development workflow.

Last updated: 2026-06-28