Regex Tester
Test regular expressions in real-time and view matches.
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Flags:|Presets:
Frequently Asked Questions
What is a regular expression?↓
A regular expression (regex) is a sequence of characters that defines a search pattern. It is used for text matching, validation, and extraction.
What are regex flags?↓
Flags modify regex behavior: g (global) finds all matches, i (case-insensitive) ignores case, m (multiline) treats each line separately.