Regex Tester & Debugger
AI EnhancedTest, debug, and build regular expressions interactively. See matches highlighted in real-time, inspect capture groups, test multiple flags, and get AI-powered explanations of complex patterns. Supports JavaScript regex flavor.
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Common Use Cases
- Test regex patterns before using in code
- Debug complex regular expressions
- Validate form input patterns (email, phone, URL)
- Extract data from text with capture groups
- Learn regex with AI explanations
Frequently Asked Questions
What regex flavor does this tool use?
This tool uses JavaScript (ECMAScript) regex flavor, which is the most common in web development and supports features like lookaheads, named groups, and Unicode.
What regex flags are supported?
We support all JavaScript flags: g (global), i (case-insensitive), m (multiline), s (dotAll), u (Unicode), and y (sticky).
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Tool Info
CategorytestingAI EnhancementAvailableData StorageZero retention