Regex Tester

Test JavaScript regular expressions against sample text with match groups

Flags (g auto-added)
new RegExp(pattern, flags) · matches via .exec loop
Highlighted
[email protected], [email protected], plain text
Replacement preview
alice at example.com, BOB at SAMPLE.org, plain text
Match summaryCounts of matches and capture groups for the regex.flags /ig/2matches2 capture groups