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Free developer tool
Regular Expression Tester
Test a JavaScript regular expression against sample text with live highlighting, flags, match indexes and capture-group details.
Browser-side processing No sign-up Free to use
Highlighted result
Your highlighted matches will appear here.
How it works
A direct path from input to result.
Adjust the options
Use clear controls to choose exactly how the result should be produced.
Copy or download
Take the finished result with you. No account or saved project required.