Regex Tester

Test regular expressions, highlight matches, and replace text instantly.

Regex Pattern

Replace With (optional)

g i m

Test Text

Upload text file

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Highlighted Matches

Matches will appear here.

Replaced Output

Replaced text will appear here.

Matches

Characters

Lines

Free Regex Tester

Use this free regex tester to validate patterns, test expressions, highlight matches, and perform replacements instantly.

Perfect for developers, QA, scripting, text cleanup, validation, log parsing, and search/replace workflows.