WT-068
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DEVELOPER / LOCAL UTILITY
Regex Tester
Test JavaScript regular expressions against sample text and inspect match indexes, capture groups, named groups, and flags.
REGULAR EXPRESSIONS
LOCAL
NO DATA SENT
REGEX TEST BENCHJAVASCRIPT REGEX / MATCHES / GROUPS
PATTERNTEST A REGULAR EXPRESSION AGAINST TEXT
Uses the JavaScript regular-expression engine in your browser. The global flag (g) lists every match; without it, only the first match is returned.
MATCHES—
CAPTURE GROUPS—
STATUS—
ENGINEJAVASCRIPT
RESULTSMATCH VALUE, INDEX, AND CAPTURE GROUPS
READYEnter a pattern and test text.
LOCAL TOOL: Your pattern and test text stay entirely in your browser. JavaScript regex behavior can differ from PCRE, .NET, Python, Java, and other engines.
FIELD NOTE / 068
A regex tester helps you validate a pattern before using it in code or data cleanup.
Enter the expression without surrounding slashes, add flags such as g, i, or m separately, and review each match with its zero-based character index and capture groups.