UUID Generator
Generate cryptographically secure UUID v4 identifiers in bulk. Free, runs locally.
About this UUID Generator tool
UUIDv4 is a 128-bit random identifier with negligible collision risk. CheckHub generates them using crypto.randomUUID() locally.
How to use the UUID Generator
- Step 1. Pick how many UUIDs.
- Step 2. Click generate.
- Step 3. Copy the list.
Frequently asked questions
- When to use UUID v4 vs v7?
- v4 is fully random — best for security tokens. v7 is time-ordered — better for database primary keys to keep B-tree indexes compact.
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