Developers

Regex Tester

Test your regular expressions quickly

Regex Tester
/ /
Flags:
Test String 0 chars
0 match(es)
Matches
Common Patterns Library
مساحة إعلانية
About this Tool

Regex Tester — Test and Learn Regular Expressions

Regular expressions (Regex) are a powerful pattern-matching language used in virtually every programming language for searching, validating, and transforming text.

Common Flags

  • g (global): find all matches, not just the first
  • i (case insensitive): match regardless of letter case
  • m (multiline): ^ and $ match start/end of each line
  • s (dotAll): dot matches newlines too

Essential Symbols

  • . — any char · \d — digit · \w — word char · \s — whitespace
  • * — 0 or more · + — 1 or more · ? — 0 or 1 · {n,m} — between n and m
  • ^ — line start · $ — line end · \b — word boundary
  • () — capture group · (?:) — non-capturing · (?=) — lookahead
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مساحة إعلانية