● Developer
Regex Tester
Test a JavaScript regular expression against sample text and inspect matches.
Test text34 chars · 3 lines
Drop a local text/data file here. Nothing is uploaded.
OutputWaiting for input
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Your result appears hereNothing is uploaded. Processing happens on this device.Shortcut Ctrl/⌘ + Enter
Why this tool exists
Get the answer without turning it into a project.
Experiment with patterns and flags quickly while seeing matched text and capture groups immediately.
Common questions
Which regex flavor is used?
Patterns use the JavaScript regular expression engine available in your browser.
Can I use flags such as g, i, and m?
Yes. Enter JavaScript regex flags in the flags field.