正規表現パターン・ライブラリ
60+ ready-to-use regex patterns. Search, copy, and test inline.
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About This Library
This is a curated, searchable collection of 60+ commonly-used regular expression patterns organized by category. Each pattern includes a description, the regex itself, and example matches. Click any pattern to copy it, or use the quick-test panel to validate text against it right on this page.
Everything runs in your browser · no patterns or test strings are sent anywhere. Use these patterns in JavaScript, Python, PHP, Java, Go, or any language that supports regular expressions. For more advanced testing with flags and capture groups, try our Regex Tester.