UUID Generator
Generate UUID v4 identifiers in bulk with TXT, JSON, and CSV export for tests, fixtures, and databases.
- ✓ Free export
- ✓ No login required
- ✓ No watermark
- ✓ Commercial use allowed
Loading tool workspace...
Related tools
About UUID Generator
UUID Generator creates RFC 4122 version 4 UUIDs directly in your browser for development, testing, and data seeding workflows. UUIDs (also called GUIDs) are commonly used as unique primary keys, event identifiers, idempotency keys, and tracking tokens because they are extremely unlikely to collide. This tool focuses on fast bulk generation so you can produce a list of UUIDs in one click and export them in the format your workflow needs. Use line-separated TXT for quick paste into configs, JSON arrays for fixtures and test data, or CSV for spreadsheets and import pipelines. You can also toggle lowercase/uppercase output to match project style conventions. The generator is designed for quick copy → paste usage without installing dependencies or creating an account.
UUID Generator examples
- Use UUID Generator for a quick browser-based workflow without installing desktop software.
- Prepare output for a project, document, website, or internal workflow.
- Save repeat visits by adding this tool to favorites from the tool page or home page.
How to use UUID Generator
- Choose how many UUID v4 values you need (bulk counts are supported).
- Pick an export format: line-separated text, JSON array, or CSV.
- Click Randomize to generate a fresh set of UUIDs.
- Copy all results to clipboard or download the output file for reuse.
FAQ
What is a UUID v4?
UUID v4 is a randomly generated 128-bit identifier defined by RFC 4122. It is widely used as a unique ID in databases, APIs, and event logs.
Can I generate UUIDs in bulk?
Yes. The tool supports bulk generation so you can create many UUIDs at once and export them as TXT, JSON, or CSV.
Should I use uppercase or lowercase UUIDs?
Both are equivalent. Choose the casing that matches your project conventions or existing data format.
Can I use the generated UUIDs commercially?
Yes. The output is plain text identifiers you can use in commercial projects, databases, and tooling.
Does this require a login or upload any files?
No. UUID generation is a browser-first workflow and does not require file upload for core usage.
Common use cases
- Generating primary keys for seed scripts or database fixtures.
- Creating idempotency keys for API testing.
- Preparing UUID lists for CSV imports or spreadsheets.
- Creating unique identifiers for event tracking and logs.
Related help and indexing paths
Use these support pages to browse adjacent workflows, documentation, and comparison content around UUID Generator.
Learn more about UUID Generator
Read the complete guide for examples, quality notes, FAQs, and related workflows.
Trust and privacy
- Bulk generation is optimized for quick developer workflows.
- Export formats are explicit (TXT, JSON, CSV) so output stays predictable.
- No mandatory login is required for core generation.
- Output is copy-ready for code, spreadsheets, and fixtures.