dev-tool-x

GUID Generator

Options

Generate random version 4 GUIDs in common copy-ready formats.

Format

Generated GUIDs

About GUID Generator
GUID Generator creates random version 4 GUIDs directly in your browser using the Web Crypto API. Generate one ID or a batch, choose hyphenated, compact, braced, or URN formatting, and copy the result for test data, API payloads, database rows, or configuration files. The generated values stay on your machine and are ready to paste into the workflow you are already using.
Common uses
  • Generate identifiers for database seed data, fixture files, and API request examples.
  • Create multiple UUID v4 values at once for manual testing and local development workflows.
  • Switch between hyphenated, compact, braced, and URN formats to match the system you are pasting into.
  • Copy or download a newline-separated list of GUIDs without sending anything to a server.
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FAQ
What kind of GUIDs does this generate?
The tool generates random version 4 GUIDs, also known as UUID v4 values. They are suitable for test data, client-side identifiers, seed fixtures, and examples where a randomly generated unique-looking ID is needed.
Are generated GUIDs sent to a server?
No. GUID generation runs in your browser using secure random values from the Web Crypto API. The generated IDs are not uploaded or stored by dev-tool-x.
What format should I choose?
Use hyphenated for the standard UUID form, compact when a system expects 32 hexadecimal characters, braced for Microsoft-style values, and URN when an RFC-style urn:uuid prefix is required.
Is GUID Generator free to use?
Yes — GUID Generator is completely free and requires no sign-up or account. There are no usage limits for standard generator tasks.
Does GUID Generator send my data to a server?
No. GUID Generator runs entirely in your browser using JavaScript. Text you paste and files you upload never leave your machine, so it is safe to use with sensitive payloads, API tokens, and internal configuration data.