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Regex Tester

Popular

Test and debug regular expressions online with real-time match highlighting.

Regular Expression

Test String

How to use Regex Tester

1. Paste or type your input in the box above.
2. The tool processes your input instantly — no button click needed in most tools.
3. Copy the output or download the result.

What regex flavors are supported?

We support JavaScript regex (ECMA-262) with real-time testing. Python and PCRE patterns are also shown.

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