Regex Tester

Test a regular expression against sample text and see every match highlighted, instantly, without leaving your browser.


    


      

        
Examples

          
Extracting numbers

          
Pattern: \d+  Flags: g  Text: Order 123, ref 456

          
Match 1: "123"
Match 2: "456"

      


      

        
FAQ

          

      

        

          
        

        

          
No. Matching runs entirely in your browser using JavaScript's native RegExp engine.

        

      

      

        

          
        

        

          
JavaScript's (ECMAScript) regex flavor — the same engine your browser and Node.js use. Syntax can differ slightly from PCRE, Python, or other flavors.

        

      

      

        

          
        

        

          
Check your flags — a pattern without the "g" flag only reports the first match, and case sensitivity depends on the "i" flag.

        

      

  


      


      

        
Related Tools

        

              
    
JSON Formatter

    

  

              
    
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Guide

        
Enter a pattern, optional flags (like "g" or "i"), and test text. Every match is listed below as you submit.