Regex Tester
Test regex patterns and see matches live. Free, no signup.
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How It Works
Enter a regular expression and flags (e.g. g for global, i for case-insensitive). Type or paste test text below. Matches are highlighted in real time as you type. The match count and individual matches are shown below.
What Are Regular Expressions?
Regular expressions (regex) are patterns used to match character combinations in strings. They are essential for text search, validation, parsing, and find-and-replace operations in programming, text editors, and command-line tools.