⚗ Testing / QAFree — No Signup Required
UUID Batch Generator
Generate batches of UUIDs for testing. A browser-based developer tool that runs entirely client-side — no data is sent to our servers, no account required.
Use UUID Batch Generator now
Free — open instantly, no account needed.
What it does
The UUID Batch Generator is designed for developers who need to generate batches of uuids for testing quickly and accurately, without setting up local tools or depending on third-party services.
Whether you're working in testing / qa or integrating it into a broader development pipeline, this tool saves time and reduces the risk of manual errors. All processing runs in your browser — your data never leaves your machine.
- ► Setting up automated test suites for CI/CD pipelines
- ► Generating realistic mock data for integration tests
Key features
- ✓Generate 1 to 10,000 UUIDs at once
- ✓v4 (random) UUID format
- ✓RFC 4122 compliant
- ✓Copy all as newline-separated list
- ✓CSV or JSON array output modes
Example
Generate 5 UUIDs
Input
Count: 5
Format: list
Output
550e8400-e29b-41d4-a716-446655440000
6ba7b810-9dad-11d1-80b4-00c04fd430c8
f47ac10b-58cc-4372-a567-0e02b2c3d479
16fd2706-8baf-433b-82eb-8c7fada847da
a8098c1a-f86e-11da-bd1a-00112444be1e
How to use it
- Open UUID Batch Generator by clicking on it in the Dev-Belt dashboard.
- Enter your input in the provided fields — all processing happens instantly in your browser.
- Copy the output using the Copy button, or paste it directly into your project.
- No sign-in required — the tool is ready to use immediately on page load.
When to use this in your project
Primary keys in a database
Use UUIDs instead of sequential integers to avoid exposing record counts and enable distributed ID generation without coordination.
Idempotency keys for APIs
Payment and job APIs use idempotency keys to prevent duplicate operations — generate one per request.
File naming in object storage
Avoid name collisions in S3/GCS by using a UUID prefix — guarantees uniqueness across all clients and services.
Developer notes
!Mock data should resemble production data in shape but must never contain real user PII.
!Run load tests in a staging environment only — running against production will affect real users.
!Edge cases to always test: empty input, null values, max-length strings, Unicode characters, negative numbers.
Privacy & Security
All Dev-Belt tools run 100% in your browser using client-side JavaScript. Your input data is never sent to our servers, never logged, and never stored. This includes code snippets, credentials, tokens, API keys, and any other sensitive information you enter. We only track authentication events for account management — never tool usage, search queries, or input data.
Related keywords
uuidtestingdata-generation
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246 Developer Tools — One Dashboard
UUID Batch Generator is one of 246 browser-based tools on Dev-Belt. Free tools work instantly — no account required. Pro unlocks the full suite at $12/month.