How to Use the Regex Tester

Enter your regular expression pattern in the input field without surrounding slashes (e.g., type [0-9]+ instead of /[0-9]+/). Select your preferred regex flags, and paste your test text into the input box to see real-time match results and captured groups.

Quick Regex Reference

• \d - Match any digit (0-9)
• \w - Match any word character (letters, digits, underscore)
• [a-z] - Character set matching any lowercase letter
• + - Match 1 or more occurrences
• * - Match 0 or more occurrences
• (^ | $) - Match start or end of a line

100% Client-Side Privacy

Your regex evaluation runs entirely inside your web browser's native JavaScript engine using RegExp object evaluation. No test data or code snippets are ever transmitted over the network.