FREE · DEVELOPER TOOLS
CUID2 Generator.
Generate collision-resistant CUID2 identifiers with local cryptographic randomness.
How to use CUID2 Generator
Enter your input, adjust settings and generate locally. Review the output before use.
How it works
Generate collision-resistant CUID2 identifiers with local cryptographic randomness. CUID2 rather than legacy CUID1; IDs are not sequential or sortable. Length 16–32, count 1–100. Input remains in this browser page.
Example
Run the editable example to inspect the result.
Questions about CUID2 Generator
Is CUID2 Generator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
CUID2 rather than legacy CUID1; IDs are not sequential or sortable. Length 16–32, count 1–100. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.