Software development · Runs in your browser
UUID Generator
Generate UUID version 4 identifiers individually or in batches with the browser's cryptographic random source.
Files stay in this browser tab.
How to use it
Choose a quantity from 1 to 1000 and generate the identifiers. Copy or download the list.
Worked example
Generate ten identifiers for a synthetic application-data fixture.
What to check
These are random UUIDv4 identifiers. They do not encode time or provide authorization.
Build a system for this use case
Application and database development environment
Example OpenFactory build prompt
Build a useful application and database development environment on Ubuntu 24.04 LTS amd64, unless the target installer or embedded board requires its explicitly selected OS.
Use PostgreSQL, a sample API and UUID-based test records. Include only the components this workload needs. Use synthetic sample data and placeholders for site-specific domains, authorized SSH public keys and external integration credentials. Create a non-root operator and keep administrative access private. Never put real credentials, patient records or customer data in the image.
Acceptance checks: insert and retrieve UUID-keyed records, reject duplicate keys and verify the database survives reboot. Boot the actual artifact and repeat relevant health, persistence and access checks after reboot. Keep hardware-dependent checks pending until the specified equipment is attached.
Deliver the bootable image or reproducible deployment recipe, the software inventory and a test report that separates successful assembly from runtime verification. Ask for missing hardware, storage and access details before making irreversible deployment choices. Do not deploy into production or erase an existing disk without an explicit target.Your tool inputs and files are not included in the build prompt. Review the draft and press Send in OpenFactory.
Source
IETF: UUID specificationOpenFactory · 2026-10-29