Developer Rizz tool
UUID Generator
Generate UUID v4 and time-ordered UUID v7 values.
Generate random UUID v4 values or time-ordered UUID v7 values one at a time or in batches.
How to use UUID Generator
- Choose UUID v4 or v7.
- Enter the number of values to generate.
- Copy the results or download them as TXT or CSV.
What this tool does
Bulk generation
Create many UUIDs in one batch, subject to browser resources.
UUID v7 support
Create identifiers designed to sort roughly by generation time.
Download options
Export results as TXT or CSV.
Common uses
- Create v4 identifiers for records and fixtures.
- Create time-sortable v7 identifiers for database rows.
- Generate a batch for import into another system.
Processing and privacy
Browser processing: UUID generation, copying, and file export happen in the browser.
Limitations to know
- UUIDs are designed to make collisions extremely unlikely, not mathematically impossible.
- A UUID is an identifier, not a secret or access token.
Keep original files where applicable, inspect the result, and do not rely on an automated output without checking that it fits your intended use.
Examples
UUID v4 shape
Input: Generate one v4 UUID
Output: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx (random values replace x/y)
Practical tips
- UUID v7 can be useful for time-ordered database keys, but test its indexing behavior in your own system.
Frequently asked questions
What is the difference between v4 and v7?
v4 is random. v7 includes a timestamp component, making values generally time-sortable. Choose based on your application’s identifier requirements.
Related tools and guidance
- Password Generator — Generate strong passwords and memorable passphrases.
Read practical RizzKit guides for verification steps and workflows that combine related utilities.