UUID Generator — Free Online, No Upload Needed
Generate cryptographically random UUID v4s in bulk. Copy or download as text.
Data & DevFreeNo uploadOffline-capable
Open the interactive uuid generator tool — free, runs in your browser.
About this uuid generator
Create database IDs, request tokens or test fixtures in bulk. Up to 500 UUID v4 values per batch, generated with the Web Crypto API — safe for real identifiers, not just demos.
How to use
- Choose count and letter case.
- Click Generate.
- Copy or download the list.
Common use cases
- Create primary keys for a database seed or test fixtures.
- Generate idempotency and request IDs for API tests.
- Produce unique filenames or session identifiers in bulk.
Every file is processed locally in your browser. Nothing is uploaded, logged or stored, and there is no account to create.
UUID Generator FAQ
Are they cryptographically random?
Yes, built on crypto.getRandomValues, not Math.random.
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