devcrate / Generators / UUID Generator
Generators
Generate UUIDs, in bulk.
Generate cryptographically random v4 UUIDs, one per line, for seeding databases, test fixtures, or unique identifiers.
runs entirely in your browser — nothing is uploaded
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How to use the uuid generator
- Set how many UUIDs you need (up to 200 at a time).
- Click Generate.
- Click Copy all to grab the full list, newline-separated.
UUID versions at a glance
Version
How it's generated
v1
Time-based — encodes timestamp and (historically) MAC address; reveals generation order
v3
Name-based, MD5 hash — deterministic output for the same namespace + name input
v4
Random — what this tool generates; 122 random bits, effectively collision-free
v5
Name-based, SHA-1 hash — like v3 but with a stronger hash function
Frequently asked questions about the UUID Generator
Is my data uploaded anywhere when I use the UUID Generator?
No. The UUID Generator runs entirely in your browser using JavaScript — nothing you type, paste, or select is sent to any server. You can confirm this yourself by opening your browser's network tab while using it.
Is the UUID Generator really free, and do I need an account?
Yes — the UUID Generator is completely free, with no account, sign-up, or usage limit.
Does it work on mobile and in any browser?
The UUID Generator works in any modern browser — Chrome, Firefox, Safari, or Edge — on desktop or mobile, since it's built with standard HTML, CSS, and JavaScript with no special requirements.