Text & writing
Regex Tester
Test a pattern against sample text and inspect every match group.
Runs entirely in your browser — nothing is uploaded
2 matches
at 8
alice@example.comgroup 1: alice
group 2: example
at 29
bob@test.comgroup 1: bob
group 2: test
Frequently asked questions
Which regex flavour is used?
JavaScript regular expressions, the same engine your browser and Node.js use.
Can I see capture groups?
Yes. Every match is listed with its position and each numbered or named capture group it produced.