Dev & Data Tool
UUID Generator
Generate Version 4 UUIDs instantly for development and testing.
Generate UUIDs
Quick amounts
Version 4 only, capped at 100 per run.
Good for
- Temporary IDs in tests, fixtures, and API requests.
- Generating a quick batch without leaving the browser.
- Copying one value or downloading a whole run as plain text.
Privacy note: UUIDs are generated in the browser and are not stored.
Generated Output
0 UUIDs ready
How it works
This tool generates Version 4 UUIDs directly in the browser for quick development and testing workflows.
You can generate a single value or a batch, copy individual UUIDs, copy the full set, or download them as a plain text file.
Because the UUIDs are created locally in the browser, it is a quick option for development workflows where you need identifiers immediately without relying on a separate package, script, or command-line tool.
FAQ
This version stays focused on Version 4 UUIDs so the page remains quick and obvious to use.
Formatting options and other UUID variants can be added later if they prove useful.
If you only need one UUID, set the count to `1`; if you need a quick batch for fixtures or seed data, generate multiple values and copy or download the result in one go.
What a UUID generator is used for
A UUID generator creates unique identifiers that can be used in software development, APIs, databases, QA workflows, and mock data. UUIDs are especially useful when you need IDs that are unlikely to collide across different environments or systems.
This makes them useful for test records, JSON payloads, sample objects, temporary references, migration scripts, logs, and development fixtures. Instead of manually inventing IDs or reusing the same placeholder value, you can generate fresh Version 4 UUIDs instantly.
Keeping a fast browser-based UUID tool handy is also useful when you are working across several devices or environments and want a simple online UUID generator without opening a terminal.
Typical use cases
- Generating IDs for API requests, webhooks, and test payloads.
- Creating unique keys for database seed data and local fixtures.
- Producing batches of UUIDs for QA scripts or staging demos.
- Copying a one-off UUID for a quick debug or support task.
- Downloading a plain-text list for use in other tools or systems.
Why this online UUID generator stays simple
Fast by default
The page focuses on the most common need: generating Version 4 UUIDs quickly with no extra setup and no unnecessary options to get in the way.
Useful for batches
You can generate multiple UUIDs at once, which is handy for fixtures, placeholder records, and repeated test scenarios where a single value is not enough.
Browser-side generation
Values are generated in the browser, so the tool remains lightweight and practical for quick day-to-day development work.
