UUID Generator/Decoder

Generate UUIDs (v1/v3/v4/v5) or decode UUIDs without online tools. DevUtils.app allows you to quickly generate UUIDs and decode UUID without any internet connection. It supports all four versions of UUIDs, batch generate, and more.
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Quickly decode a UUID

You can encode a UUID from anywhere in your macOS (terminal, in email, web browser,...). DevUtils will inspect your clipboard content and automatically select the UUID Decoder tool if the content contains a valid UUID. Activate the app by:
  • Copy text → Press ⌃⌥⌘Space(Or your own customized hotkey, up to you)
  • Copy text → Click to DevUtils icon in the status bar
  • Select text → Right-click → "Inspect in DevUtils.app"(This menu appears after you install the app)


Enter your UUID in the input textbox. If you already have the string in your clipboard, just click the "Clipboard" button, and the tool will use the content in your clipboard as input.


The tool will decode the UUID into the following components:
  • Standard String Format
  • Raw Contents
  • Version
  • Variant
  • For time-based UUID
    • Time
    • Clock ID
    • Node


When you activate the app, DevUtils will inspect your clipboard content and automatically select the UUID Generator/Decoder tool if the content is a valid UUID. You can disable this automatic feature by unticking the option in the setting panel (the gear icon).
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Generate UUIDs

You can generate (and batch generate) UUIDs using the UUID Generator feature of the tool. First, select the version of the UUID you want to generate. Then enter the number of UUIDs you want to generate. Finally, click "Generate".
For v3/v5 UUIDs, you will also need to enter the Namespace and Name. Note that if you batch generate multiple v3/v5 UUIDs, all of the generated UUIDs are the same since there is no random component in the UUIDs.
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You can optionally choose the generated UUIDs to be in uppercase or lowercase by ticking/unticking the "lowercased" checkbox.

Also available on uuidgenerator.app