Regex Tester

Test regular expressions against text in real time. Shows all matches, groups, and positions.

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支持文档、图片、音频、视频和文本文件

正则表达式

测试字符串

Flags:

输出

隐私： 此工具完全在您的浏览器中运行。数据不会发送到我们的服务器。我们不存储、分享或访问您在此处理的任何信息。

Examples

Example 1

The quick brown fox jumps over the lazy dog

Click above to load example 1

A: JavaScript (ECMAScript) regex syntax.

A: g (global), i (case-insensitive), m (multiline), s (dotAll).

A: Yes, all capture groups are listed for each match.

Encode special characters to HTML entities and decode HTML entities back to plain text. Essential for web developers.

URL encode (percent-encode) or decode strings for safe web transmission.

Extract all email addresses from any text or document.