404tools.dev
Live

Regex Tester

Test, debug and understand regular expressions in real time.

Pattern

//

Test String

2 matches · 3 groups
hello from user@gmail.com and admin@404tools.dev

Matches

#1
user@gmail.comindex 11–25
Group 1:user
Group 2:gmail
Group 3:com
#2
admin@404tools.devindex 30–48
Group 1:admin
Group 2:404tools
Group 3:dev