Regex Tester
REGULAR EXPRESSION PATTERNFlags: /gimu/
//
Evaluating pattern…
Quick tokens:
Test String
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No matches found in the current test string.
Regex Studio ready. Test or select a pattern template.
Precision Regular Expression Engine
Test, debug, and verify complex regex patterns with instant visual feedback, capture group isolation, and safe execution entirely inside your browser.
Capture Group InspectorDetailed breakdown of positional ($1, $2) and named (?<name>) groups per match with character span offsets.
Real-Time String ReplacementTest replacement expressions using standard substitution tokens ($1, $2, $&) before applying them in production code.
How to use Regex Tester
- Enter a JavaScript regular expression and select its flags.
- Add test text and inspect the matches and capture groups.
- Try a replacement and verify it against representative input.
Try an example
Pattern: \d+ · Flags: g · Text: Order 12, item 34
The numeric sequences 12 and 34 match. Syntax and behavior follow JavaScript regular expressions.
What to know before using Regex Tester
Enter a JavaScript regular expression and test text, then inspect matches and capture groups. Keep patterns and inputs small when exploring expensive expressions.