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Regex Tester

Test regular expressions with live match highlighting and capture group table.

浏览器内处理即时输出本地数据

為什麼用這個工具

Build and test regex patterns with flags, highlighted matches, and capture group inspection.

Regex Tester highlights all matches in real time as you type your pattern.

Capture groups appear in a table below, and preset patterns let you start quickly.

01Enter or choose a preset pattern.

02Set flags (g, i, m, s) as needed.

03Paste test text and see matches highlighted with cycling colors.

先确认输入格式符合你的预期。

在把结果用于文档、链接、配置或消息前快速扫一眼。

只复制你真正需要的输出。

What flags are supported?

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

How many matches does it find?

Up to 500 matches per test to keep the UI responsive.

Does it show named capture groups?

It shows numbered capture groups. Named groups are shown by their position.