How-to guide
How to generate a UUID in your browser
In Chrome’s DevTools Console, run crypto.randomUUID(). Or press ⌘K with TabCmdr (Ctrl+K on Windows and Linux), type :uuid and press Enter to copy a new one.
Quick answer
Copy a new UUID in three steps
- ⌘K
Step 1
Open the palette
Ctrl+K on Windows and Linux. Works on any page.
- :uuid
Step 2
Type :uuid
A new random UUID appears.
- ↵
Step 3
Press Enter
The whole UUID is copied.
Chrome's way
Make a UUID in Chrome’s DevTools
Chrome’s DevTools Console can run crypto.randomUUID(), which returns a random, 36-character version 4 UUID.
- Open a page whose address starts with
https://. The function only works on secure pages. - Press Ctrl+Shift+J on Windows and Linux, or ⌘+Option+J on a Mac, to open the Console.
- Type
crypto.randomUUID()and press Enter. The Console prints the new UUID.
Sources: Chrome for Developers’ Console guide and MDN’s crypto.randomUUID() page, checked in October 2026.
TabCmdr's way
Make a UUID with TabCmdr
TabCmdr is a keyboard launcher that lives in your browser. It makes the same kind of UUID from any page, without opening DevTools.
Before you start: add TabCmdr from the Chrome Web Store. It has a 7-day free trial and needs no account.
Step 1: Open the palette
Press ⌘+K on a Mac or Ctrl+K on Windows and Linux.
Step 2: Type :uuid
A new UUID shows at the top of the list, under UUID. Type it in lowercase.
:uuid makes a new version 4 UUID. Long values are cut off in the row, but the whole UUID is copied.Step 3: Press Enter
TabCmdr copies the full UUID, closes the palette and shows UUID copied at the bottom of the page. Paste it with ⌘+V or Ctrl+V. To get another one, open the palette and type :uuid again.
Try it on your own tabs
Works in Chrome, Edge, Brave, Arc, Vivaldi and Opera.
Install for Chrome