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Tom Utilities

正規表現テスター

開発者ユーティリティ

サンプルテキストに対して正規表現をテストし、すべてのマッチとキャプチャグループを確認します。

使い方

Testing a pattern

Enter a pattern and flags, provide sample text, and matches are highlighted as you type.

  1. Type the regular expression.
  2. Select flags such as global or case insensitive.
  3. Read the highlighted matches and groups.

よくある質問

Which regex flavour is used?

The JavaScript RegExp engine, so it matches how your browser interprets patterns.

Can a pattern freeze the page?

A high match limit protects against runaway patterns and shows a warning if the limit is reached.