Is this UUID Generator safe for sensitive data & credentials?

Yes, 100%. All processing runs client-side in your local browser memory. No text, tokens, payloads, or logs are ever transmitted to any remote server or analytics engine.

Can I use UUID Generator offline without internet?

Partly. This tool runs on client-side JavaScript with no external API calls, so once it is open it keeps working if your connection drops. Pages are not cached for offline use, so loading a tool needs a connection.

How does URL state sharing work?

When you click the share (link) icon, your input is compressed into a URL hash fragment (#data=...) and the link is copied to your clipboard, without storing anything on a database server.

UUID / ULID / NanoID Generator (Private & Secure)

Generate UUIDs (v4, v7), ULIDs, and NanoIDs in bulk directly in your browser. 100% private.

How to use

Select the ID type (UUID v4, UUID v7, ULID, or NanoID).
Pick a quantity (1 to 100) and an output format (Lines, JSON, or CSV).
IDs generate instantly; click 'Regenerate' for a new batch and 'Copy All' to copy the list.

100% Client-Side Privacy: This tool executes entirely within your browser's runtime environment. No payloads, tokens, or inputs are transmitted to external servers.

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Troubleshooting Recipes & Fixes

Fix "duplicate key value violates unique constraint"
Your database INSERT fails with `duplicate key value violates unique constraint`. You are trying to insert a row using an ID or column value that already exists in the table.

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Troubleshooting Recipes & Fixes

Fix "duplicate key value violates unique constraint"