Regex tester
Highlights regular expression matches, shows groups and the replace result.
Test string
2 matches
Write to hello@kitdesk.app or support@example.com.
Phone: +380 44 123 45 67, order #2048 of 2026-11-04.
Matches and groups
hello@kitdesk.appindex 9support@example.com.index 30
Replace
Write to <hello@kitdesk.app> or <support@example.com.>
Phone: +380 44 123 45 67, order #2048 of 2026-11-04.
Cheat sheet
\ddigit\wletter, digit or _\sspace, tab, newline.any character[abc]one of these[^abc]anything but these^ / $start / end of linea* a+ a?0+, 1+, 0 or 1 timesa{2,5}2 to 5 times(…)group(?<name>…)named groupa|ba or b\bword boundary(?=…)followed by …\p{L}any letter (with u)