Regex Tester
Test, evaluate, and highlight regular expressions in real-time.
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Commonly Used Regex
What is a Regex Tester?
Regular expressions (Regex) are incredibly powerful search patterns, but they are notoriously difficult to write and debug. A regex tester provides a safe, real-time environment to evaluate your patterns against test strings. It instantly highlights exactly what your pattern is matching, ensuring your logic is flawless before deploying it in code.
How to use
- 1Type your regular expression pattern in the main input field.
- 2Add or remove regex flags (like 'g' for global or 'i' for case-insensitive) in the trailing input.
- 3Enter or paste the text you want to search through into the 'Test String' box.
- 4Matches will instantly illuminate in the 'Match Results' viewer below.