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Regex Tester — Test Regular Expressions Online with Live Matching

December 31, 20254 min Read
Regex Tester — Test Regular Expressions Online with Live Matching

Test Regex Patterns Live

Write regular expressions and see matches highlighted in real time.

How to Use

  • Open the Regex Tester tool
  • Enter your regex pattern
  • Paste your test string
  • See matches highlighted as you type
  • View capture groups and match details

    • Common Patterns

    PatternMatches
    \d+Numbers
    [a-zA-Z]+Words
    \b\w+@\w+\.\w+\bEmails (basic)
    ^https?://URLs
    ## FAQ What regex flavor is used?

    JavaScript regex (same as browsers and Node.js).

    Does it support flags?

    Yes — global (g), case-insensitive (i), and multiline (m) flags.

    Can I save patterns?

    Copy the pattern for later use. Bookmark the page for quick access.

    Try Regex Tester

    Test regular expressions with live matching.

    regex
    regular expression
    test
    pattern

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