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Regex Tester

比 regex101 更完整的最终版正则工具

模板库 + Worker 防 ReDoS + 命名分组 + 替换预览 + PC / mobile 响应式

//
无匹配
Web Worker 安全执行

匹配与替换都在 Worker 中运行,500ms 超时自动中断,避免主线程卡死并降低灾难性回溯(ReDoS)风险。

分类模板库
点选即可填充 pattern / flags / demo

测试文本输入

37 字符

匹配高亮预览

Hover / 点击右侧条目与高亮联动

Ada Lovelace Alan Turing Grace Hopper

匹配详情

包含捕获组与命名分组

0

还没有匹配结果

输入正则与文本后,这里会展示每个匹配、捕获组和命名分组。

统计

匹配数量
0
执行耗时
0ms
捕获组总数
0
命名分组键
0

命名分组汇总

当前没有命名分组。

Free online Regex Tester. Support Regex matching test, group viewing, and replace preview for form validation, text extraction, log analysis, and development debugging.

Related

Use Cases

  • Test regex expressions in real time when developing form validation rules for email, phone numbers, etc.
  • Use regex to extract specific format data or error messages during log analysis
  • Verify replace rules execute correctly during text cleaning
  • Understand groups and captures through real-time match results when learning regex

Features

  • Regex match results visible in real time: Better for quickly validating if expressions are correct
  • Replace preview more intuitive: Reduce mis-replacement and repeated debugging costs
  • Covers high-frequency dev scenarios: Forms, logs, and text extraction all commonly used
  • Naturally compatible with bilingual searches: Regex tester and Chinese regex terms laid out together

How to Use

  1. 1.Enter regex expression to test
  2. 2.Paste or enter test text content
  3. 3.Tool displays match results, group content, and replace preview in real time
  4. 4.Adjust regex expression based on test results until meeting expectations

FAQ

How to test if a regex matches online?

Enter regex and test text to see hit results in real time. Suitable for quickly validating email, phone number, URL, and other common patterns.

What development scenarios is Regex testing suitable for?

Form validation, log extraction, data cleaning, replace rule verification, and crawler matching are all high-frequency use cases.

Why do regex searches often include the English term 'Regex'?

Terms like Regex tester, regex replace, and capture groups are developers' default expressions. This is natural for dev tools.

Can I see both match results and replace effects simultaneously?

This is exactly what makes online testers most valuable. It significantly reduces time spent repeatedly modifying rules and running code.