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Regex Tester & Debugger
Test and debug regular expressions online. Real-time regex matching with match highlighting and group capture display.
//g
Flags:(g=global i=insensitive m=multiline s=dotall)
2 matches
Contact us at hello@example.com or support@wowshortcuts.com for help.
Matches
1
hello@example.comat index 142
support@wowshortcuts.comat index 35ℹAbout Regex Tester
Our Regex Tester lets you test regular expressions against any text in real time. See all matches highlighted, view capture groups, test flags like global and case-insensitive, and debug patterns quickly without writing code.
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?Frequently Asked Questions
What is a regular expression?
A regular expression (regex) is a sequence of characters that defines a search pattern, used for string matching and manipulation.
What regex flavors are supported?
This tool uses JavaScript regex syntax, which is compatible with most modern programming languages.
How do I use capture groups?
Wrap parts of your pattern in parentheses () to create capture groups. The tool displays all matched groups.