Developer Tools

Regex Tester

Test and debug regular expressions online with real-time match highlighting.

🆓 Free 🚫 No Login ⚡ Instant
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Match Results
Enter regex pattern to test
<ol><li>Enter your <strong>Regular Expression</strong> in the pattern field.</li><li>Select desired <strong>Flags</strong> (g, i, m, s).</li><li>Paste your <strong>Test String</strong> in the input area.</li><li>Matches are highlighted in real time with match details shown below.</li></ol>

About Regex Tester

<p>The <strong>Regex Tester</strong> lets you write, test, and debug regular expressions directly in your browser. Enter your pattern and test string to see all matches highlighted in real time, along with capture group details and match positions.</p><p>Supports JavaScript regex syntax with flags: global (g), case-insensitive (i), multiline (m), and dotAll (s).</p>
Tags: regex tester matches regular expression

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