Regex Tester

Test JavaScript regex patterns against any text. Capture groups, named groups, flags, replace mode. Browser-only.

text-regex

Regex Tester

Pattern

Flags:g — globali — ignore casem — ^/$ per lines — dot matches newlineu — unicodey — sticky

0 / 10,240 chars

Click Run to execute — avoids re-running on every keystroke. Text is capped at 10,240 chars and execution at 1 second to prevent catastrophic backtracking from freezing the tab. Runs in your browser.

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