Local developer tool

Regex Tester.

Test regex patterns against text in real time. Matches are highlighted directly, with capture groups broken down individually. Everything runs locally in your browser.

/ / Enter a pattern
Test string 0 characters
Highlighted matches 0 matches
Match details
100% local. Regex evaluation happens entirely in your browser using the native JavaScript regex engine.
Supported flags: g global · i ignore case · m multiline · s dotAll
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