Type your regular expression pattern in the regex input field.
Add flags like g, i, m, s, u, or y depending on your matching needs.
Provide sample text to test and view real-time matches.
Read token-level explanations to understand exactly what your regex does.
Regular expressions are powerful but often hard to debug. This regex tester helps you quickly validate patterns, inspect match positions, and learn token behavior with built-in explanations.
Whether you are validating form inputs, parsing logs, or extracting data, this tool helps you iterate faster and avoid regex mistakes.
Build and verify patterns for emails, usernames, and password rules.
Extract IDs, dates, links, and structured text from raw content.
Match repeated log formats and isolate useful debugging signals.
Understand each token and improve regex skills with explanations.
The tester supports JavaScript flags: g, i, m, s, u, and y. Invalid characters are ignored.
If you include the g flag, the tool finds all matches. Without g, it returns only the first match.
The tool tokenizes your regex pattern and maps common symbols and structures to plain-language meanings.
No. Pattern testing and highlighting run client-side in your browser.
Yes. You can download match summaries including the pattern, match count, and match positions.
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Test regular expressions in real time, view matches, and understand each token with clear explanations.
Compiled as: /\b[A-Z][a-z]+\b/g