Regex Tester
Test regular expressions with real-time match highlighting.
Web MCP ReadyAI agents can call this tool directly — no page scraping
Real-time matchesCapture groupsCommon patterns
Flags
Common Patterns
0 characters
Match Results
0 MatchesEnter a regex pattern and test string to see matches
Flag Reference
g
Global - Find all matches
全局 - 查找所有匹配项
i
Case Insensitive
不区分大小写
m
Multiline - ^ and $ match line boundaries
多行 - ^ 和 $ 匹配行边界
s
Dotall - . matches newlines
单行 - . 匹配换行符
Your data stays yours
100% local
Everything runs in your browser
Zero uploads
Files are never sent to a server
No sign-up
Free to use, no account needed
Regex Tester FAQ
Answers to the most common questions about using this tool.
Is this tool free to use?
Yes — every ConvTop tool is 100% free, with no sign-up, no limits and no watermark.
Is my data safe with this tool?
Yes. Everything runs locally in your browser — your input never leaves your device, so sensitive data stays private.
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