Generate UUIDs in Your Browser for Testing and IDs
Create UUID v4 identifiers locally for fixtures, database seeds, and API tests with ToolVera’s free UUID generator.
Open UUID GeneratorNeed a handful of unique IDs without installing another CLI? Open UUID Generator, set how many UUIDs you need, and copy or download them. Generation runs in the browser with the Web Crypto API.
- Seed fixtures and demo tenants.
- Mint correlation IDs for local API tests.
- Pair with Hash Generator when you need digests instead of UUIDs.
- Find more encoding tools in Developer Essentials.
Frequently Asked Questions
Are browser-generated UUID v4 values unique enough?+
UUID v4 values from a CSPRNG (Web Crypto) are suitable for fixtures, correlation IDs, and most application primary keys. Collisions are astronomically unlikely for normal usage.
Does ToolVera send UUIDs to a server?+
Generation runs in your browser with the Web Crypto API. You can copy or download results without creating an account.
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