Regex Tester & Debugger
Test and debug regular expressions in real time with regex flags, match tables, and common pattern presets.
About Regex Tester & Debugger
Building and testing regular expressions can be challenging. OpsKitTools Regex Tester lets you test regex against sample text with live match highlighting, capture group parsing, flag controls, and quick pre-built patterns for emails, IPs, URLs, dates, and phone numbers.
How to Use This Tool
- Enter your regular expression in the pattern field (e.g. '[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}').
- Toggle flags: Global (g), Case-insensitive (i), Multiline (m), DotAll (s).
- Type or paste your test string in the test area.
- View match indices, capture groups, and total match count in the results panel.
Practical Examples & Use Cases
Email Address Extraction
devops@example.com, test.user+label@company.co.uk
Matches and extracts individual email addresses with distinct capture groups.
Frequently Asked Questions
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