Regex tester

RegExp, live.

Type a pattern and flags; watch matches highlight in real time. Capture groups listed below. All client-side, uses the same JavaScript RegExp engine your code will.

Pattern

/ /

Test string

Emails: alice@example.com, bob@acme.io, and charlie@startup.dev.

Highlighted

Matches & groups

Live highlighting Capture groups Flags g · i · m · s · u · y