UUID Generator (v4)

Generate cryptographically random UUIDs (v4).

Free · Runs in your browser · Last updated 2026-05-03

Count: Uppercase Wrap in {braces}

About this tool

Generate one or many UUID v4 identifiers using crypto.randomUUID(), with bulk generation up to 1000 at a time.

Privacy

All processing for UUID Generator happens locally inside your browser using JavaScript. Your input is never uploaded to a server, logged, or shared with third parties.

Frequently asked questions

Is the UUID Generator free to use?

Yes. UUID Generator is completely free for both personal and commercial projects. There are no usage limits, no sign-up, and no premium tier.

Is my data safe when I use UUID Generator?

All processing happens locally in your browser using JavaScript. Your input is never uploaded to our servers, logged, or shared with any third party.

Does UUID Generator work offline?

Once the page has loaded, the tool runs entirely client-side. You can disconnect from the internet and it will keep working in the same browser tab.

Which browsers are supported?

UUID Generator works in all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, Brave, and Opera, on desktop and mobile.

Do I need to install anything?

No. UUID Generator runs in any modern web browser with no installation, browser extension, or account required.

More developer tools

Compare Anything

Side-by-side diff for JSON, XML, contracts, specs, job offers — with decision matrix.

JSON Formatter

Format, beautify, minify and validate JSON instantly in your browser.

XML Formatter

Pretty-print, minify and validate XML documents online.

YAML Formatter

Validate and re-emit YAML in a clean normalized form.