Gezidao

Regex Tester

Test regular expressions against sample text with live match highlighting.

Live preview 



    

    

      Report an issue
    


    


Advertisement




    

      

        AHow to use
      

      
    
        
        
  1. 
          01
          Type a regular expression and optional flags (g, i, m…).
        
    2. 
        
        
  2. 
          02
          Paste sample text below it.
        
    3. 
        
        
  3. 
          03
          Matches are highlighted live, with a total count.
        
    4. 
        
      

    


    

      

        QFAQ
      

      

        
        

          
            Which regex flavor is used?
            ＋
          
          
JavaScript (ECMAScript) regular expressions — the same engine that runs in every browser and Node.js. Flags like g (global), i (ignore case) and m (multiline) work here.

        

        
        

          
            Why does only one match get highlighted?
            ＋
          
          
Without the g flag a regular expression stops at the first match — exactly what happens in real code. Add g to highlight every occurrence.

        

        
      

    


    
    

      

        →Related tools
      

      

        

  
    
      
    
    →
  
  
    JavaScript Formatter
    Format or minify JavaScript locally.
  



  
    
      
    
    →
  
  
    YAML to JSON
    Convert simple YAML key-value data to JSON.
  



  
    
      
    
    →
  
  
    YAML Formatter
    Format and validate common YAML syntax.
  



  
    
      
    
    →
  
  
    TOML Formatter
    Format and validate common TOML values.