What is the difference between UUID and NanoID?

UUIDs are standard 128-bit identifiers (commonly v1 or v4). NanoIDs are shorter, URL-friendly unique IDs that can be customized for length and alphabet.

Is this ID generator secure?

Yes. Both UUID v4 and NanoID rely on cryptographically strong randomness, making them secure and collision-resistant.

Can I generate multiple IDs at once?

Yes. The tool supports batch generation, allowing you to produce dozens or hundreds of IDs and export them to CSV, JSON, or TXT.

Does this tool upload my generated IDs?

No. Everything runs entirely in your browser. IDs are never uploaded or stored on a server.

Toolzium

UUID & NanoID Generator

Secure IDs with custom rules, batch generation, formatting, validation & export.

Settings

Choose generator, size/count, formatting & uniqueness.

Version

Count

Uppercase

Hyphens

Braces

Unique only

Formatting

Prefix

Suffix

Join delimiter

Use \\n or \\t for newline/tab

Entropy

122 bits

per ID (v1/v4/v7)

Planned count

IDs to generate

Quick Tools

Auto Run

Re-run on every change

Validate

Paste an ID above.

Generated IDs

Click Generate to create IDs.

UUID V4

Tip: use Prefix/Suffix for environment tags (e.g., id_, _prod). Enable Unique only to dedupe.

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