Random String Generator
Generate cryptographically secure hexadecimal, alphanumeric, or URL-compatible random strings. Choose a preset or define your own character set.
Local processingUUID Generator
About this tool
Create standard UUID version 4 identifiers using cryptographically secure randomness provided by the browser. Generate one identifier or several thousand at once in the standard lowercase format with hyphens.
Features
- Cryptographically secure UUID version 4 generation
- Generate one or several identifiers
- Copy all results or download them as a text file
- Standard lowercase format with hyphens
How to use
- Choose the quantity: Enter how many UUIDs you want to generate.
- Generate: Select Generate to create the list.
- Copy or download: Copy the results or download them as a text file.
Examples
- Create primary keys for SQLite or IndexedDB
- Generate identifiers for application testing
- Create several user identifiers for sample data
- Generate unique file names
Limitations
- Only random UUID version 4 identifiers are supported
- Generating a very large quantity may take slightly longer
- The UUIDs are generated directly in your browser and are not sent to a server.
FAQ
- Are the UUIDs cryptographically secure?
- Yes. The random values come from a cryptographically secure source provided by the browser.
- Can I generate UUIDs without hyphens?
- The output uses the standard form with hyphens. You can remove them afterward with the Text Cleaner tool.
- Can duplicates occur?
- The chance of two randomly generated UUID version 4 values being identical is extremely small for ordinary use.