~/tools / UUID Generator
UUID Generator
Generate random UUIDs (v4) — useful for database primary keys, API request IDs, and more. Uses the browser's built-in crypto.randomUUID().
A UUID (Universally Unique Identifier) is a random ID that's virtually guaranteed not to collide anywhere in the world. Unlike sequential IDs, it's hard to guess and safe to generate independently across multiple servers, which is why it's commonly used for DB primary keys and dummy test data.
# Use Cases
- Getting a UUID to use as a new table's primary key or an API request ID
- Batch-generating dummy IDs for test data or mocks
- Issuing collision-free IDs in a distributed system without a central ID server
# Usage
- Click "Generate 1" for a single UUID, or "Generate 10" for a batch of ten UUID v4s.
- Use the "Copy" button on each row to copy it to your clipboard.
- Regenerate as many times as you need.
# FAQ
- What is UUID v4?
- A 128-bit identifier generated from randomness. The chance of collision is extremely low, making it a popular choice for unique IDs in distributed systems.
- Is the generated UUID recorded on a server?
- No. It's generated on the spot using the browser's built-in crypto.randomUUID() — nothing is sent to or stored on a server.