UUID & Nanoid Batch
A clean list of UUIDs, nanoids, or short-ids — one per line, ready to copy.
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What you get
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.
Sample output
9268f695-8e3b-4890-a78b-3729930f7c22 b6b12a84-7a06-4b2a-874e-61e88882b535 0e0a5c48-2679-469b-90f7-511475c742c3 35f6a27e-e593-4a16-928d-176317b2b522 079f8742-5f69-42b7-8720-6d0c4104c995 58b548b1-a63e-4d57-8178-57d19c3c1ed1 8f2946c5-2882-4146-a4f6-8219602e1b1d 57606e78-9993-470a-a00d-570a2529fc3f 6e96904e-2f5a-4716-832f-455b5d137784 8147d3c0-34fa-450f-96b0-13f5022e3790 c61922c0-826c-48b4-8cf3-16274a1f6a19 e118c7c7-c533-4089-913a-7d40232efd97 47833a69-6379-411a-8263-8a3c89c47e81 dd604085-3b95-467f-856c-03e5c707525a 8670c53d-2496-48
Last updated: 2026-06-28