UUID Generator

Generate UUID v4 identifiers locally for tests, fixtures, database rows, API examples and automation scripts.

UUID output 

        

    

                

            
                    

                        
How to use this tool

                        
    
                                                            
  1. Choose how many UUIDs to generate.
    2. 
                                                            
  2. Generate identifiers locally in the browser.
    3. 
                                                            
  3. Copy or download the list for fixtures, tests or docs.
    4. 
                                                    

                    


                    

                        
Common mistakes

                        
    
                                                            
  • Using UUIDs as secrets or passwords.
    • 
                                                            
  • Generating identifiers client-side when the server must guarantee ownership.
    • 
                                                            
  • Confusing UUID format validation with database uniqueness guarantees.
    • 
                                                    

                    


                    

                        
FAQ

                        

                                                            

                                    Are UUIDs generated on the server?
                                    
No. They are generated locally with browser crypto when available.

                                

                                                            

                                    Are UUIDs secret?
                                    
No. UUIDs are identifiers, not credentials.

                                

                                                            

                                    Which version does this generate?
                                    
It generates UUID v4 values.

                                

                                                    

                    


                        

        
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Last updated: May 17, 2026