KT

Regex Tester

Write a pattern, paste sample text, and see what matches. Testing stays in the browser, so logs and sample records are not uploaded.

Highlighted matches 

    

    

        
Match list

        
    
            
            
  • No matches
    • 
        

    

    



            


                            

                    
How to use it

                    
    
                                                    
  1. Enter a regular expression.
    2. 
                                                    
  2. Paste the text you want to test.
    3. 
                                                    
  3. Check the highlighted matches and groups.
    4. 
                                            

                

            
                            

                    
Useful for

                    
    
                                                    
  • Try a capture group
    • 
                                                    
  • See why a pattern misses
    • 
                                                    
  • Test a pattern before adding it to code
    • 
                                            

                

            
                            

                    
Related tools

                    

                                                    
                                
Cron Expression Generator

                                
Build cron schedules visually and read them as plain English.

                            
                                                    
                                
UUID & Slug Generator

                                
Generate bulk UUID v4 values and clean URL slugs from any text.

                            
                                                    
                                
Unix Timestamp Converter

                                
Convert Unix timestamps to readable dates and turn a date into epoch seconds.

                            
                                            

                

            
            

    
Questions about Regex Tester & Explainer

    

                    

                
                    Which regex engine is used?
                    +
                
                
Your browser’s native JavaScript RegExp engine, including common flags like g, i, m, s, and u.