SHA Hash Generator
Security Local only
UUID v4 Generator
Local onlyGenerate one or many cryptographically strong UUID v4 identifiers.
Generator settings
Choose the batch size and letter case for a fresh UUID v4 set.
Ready
Browser cryptographic randomness Generated locally on this device
Generated UUIDs
A fresh UUID v4 set, ready to copy or download.
No UUIDs generated yet
Choose your settings and generate a secure UUID batch.
How to use it
- 01
Choose a quantity
Generate between one and one hundred identifiers at once.
- 02
Choose letter case
Use standard lowercase or uppercase hexadecimal characters.
- 03
Generate and copy
Every result appears on its own line for convenient use.
Frequently asked questions
How are the UUIDs generated?
The tool uses crypto.randomUUID(), the browser's cryptographically secure UUID v4 API.
Are UUID v4 values guaranteed unique?
Absolute uniqueness is not guaranteed, but the collision probability is negligible for normal use.
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