Regex Tester & Live Parser
Test regular expression patterns dynamically. This regex validator online utility parses matches and capture groupings live in your browser sandbox.
Regular Expression Pattern
//
Test Text
Live Output Summary
Highlighted Matches:
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Captured Groups Details:
No matches found in the text canvas.
Frequently Asked Questions
Have questions about this tool? Find quick answers here.
- Input your regular expression pattern, specify flags (e.g., global, case-insensitive), and type in test strings. The validator highlights matching substrings in real-time.
- You can load our preset Email validation regex template. It conforms to RFC standards to verify domains, subdomains, and characters.
- It compiles your regex string and runs it against your input sample, returning information on match counts, groups, index offsets, and capture details.
- It utilizes the JS V8 engine regular expression parser natively. This supports assertions, capture groups, lookaheads, lookbehinds, and basic Unicode flags.
Related Utilities
Did You Know?
In Regular Expressions, adding a question mark to a wildcard selector (e.g. '.*?') converts the operation to non-greedy, selecting the shortest matching sequence first.
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