Bulk ID Generator

Create multiple UUIDs, NanoIDs, short IDs, hex, or numeric identifiers.

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Input
Output
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About bulk id generator

Bulk ID Generator needs nothing from a server once the page has loaded. Leave it open on a train with no signal and it carries on.

Nothing here is stored between visits. Reload the page and you start from an empty box again.

You will find it under IDs & generators, alongside 13 other tools for the same sort of job.

Supports UUID v4, UUID v7, NanoID, short alphanumeric, hex, and numeric formats with configurable count, length, and separator.

How to use it

01
Start it
Every control is on the tool itself. Keyboard shortcuts, where there are any, are listed beside it.
02
Watch it run
It updates in the page as you go. Nothing is sent anywhere, so it keeps working with the network off.
03
Close when done
Nothing is stored between visits. Reloading gives you a clean start rather than picking up where you left off.

Examples

Batch UUID v4
Generate 5 UUID v4 identifiers separated by newlines
Input
type: uuid-v4
count: 5
length: 21
separator: newline
Output
9cd48033-dd80-48c9-a78d-295053e80f85
da3db527-7575-4e29-ac67-45dcc4792999
edc6e73f-b616-4fcf-8a0b-87b7819986cb
26e739e4-b508-425f-a398-dde81b2fc564
6ebe2599-9d2b-4a93-8c30-99226fe7331f
Comma-Separated Short IDs
Generate 3 short alphanumeric IDs separated by commas
Input
type: short-id
count: 3
length: 8
separator: comma
Output
55g0vy07, tyvp8uuq, 4l0npuyi

Questions

Does Bulk ID Generator work offline?+

Yes. It is JavaScript running in this tab, so once the page has loaded it needs nothing further from the network. Put the machine in flight mode and it carries on. Nothing you do here is sent anywhere, because there is nowhere for it to go.

Does it remember anything between visits?+

No. Reload the page and it starts from nothing. There is no account, no saved state and no cookie holding your last session. That is a deliberate trade: it cannot lose your data because it never keeps any.

Is it accurate?+

Timing comes from performance.now(), the high resolution clock the browser provides, rather than from setInterval, which drifts by a few milliseconds every tick and compounds over minutes. What can still shift things is the browser throttling a tab in the background, so leave it visible if the timing matters.

Does it make a sound?+

Where a sound makes sense, it is generated with the Web Audio API rather than loaded as a file, so there is nothing to download and nothing to block. Browsers refuse to start audio until you have interacted with the page, which is why the first press is what switches it on.

Can I use Bulk ID Generator on a phone?+

Yes. The controls are sized for touch and the layout collapses to one column on a narrow screen. Bear in mind that a phone locking its screen will suspend the page, and timing stops with it.