Generate UUIDs
v4 (random) and v7 (time-ordered), in bulk, from Web Crypto.
Runs on your device — never uploaded
How to generate UUIDs
- Choose the version
v4 for random IDs, v7 for sortable database keys.
- Pick a count
From 1 to 1,000.
- Copy
One per line, or as a JSON array.
Frequently asked questions
v4 or v7?
v7 embeds a timestamp so IDs sort by creation time, which keeps database indexes efficient. v4 is fully random.
How random is it?
Values come from crypto.getRandomValues, the browser's cryptographically secure generator.
Is anything uploaded?
No.