Regex Tester
Test regex patterns against text. View matches, groups, offsets, and replace preview.
About This Tool
The Regex Tester (Regular Expression Tester) helps you test, validate, and debug regular expressions instantly.
It’s perfect for developers, backend engineers, data analysts, SEO professionals, and students who work with pattern matching, validation, scraping, or text processing.
With this tool, you can:
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Test regular expressions in real time
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Highlight matching results instantly
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Validate email, phone, URL, or password patterns
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Debug complex regex patterns
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Use flags like
g,i,m, etc. -
Copy tested expressions easily
Add your regular expression (example: ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$).
Paste the text you want to test against the regex pattern.
Enable flags like:
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g (global match)
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i (case insensitive)
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m (multiline)
The tool highlights matched text and shows validation results in real time.
Enable flags like:
-
g (global match)
-
i (case insensitive)
-
m (multiline)
The tool highlights matched text and shows validation results in real time.
g (global match)
i (case insensitive)
m (multiline)
Still Have Questions?
A regular expression is a pattern used to match, search, or validate text strings.
It helps you debug and validate patterns before using them in code or production systems.
Yes. You can test patterns for email, phone numbers, URLs, passwords, and more.
Yes, common flags like global (g), case-insensitive (i), and multiline (m) are supported.