Regex Tester

Online regex tester with real-time match highlighting and common flags support.

Regular expressionFlags

g · Global: find all matches

i · Case-insensitive

m · Multiline: ^ and $ match at each line

s · Dot-all: . also matches newlines

Test text

Match result

What is a regular expression?

A regular expression (regex) is a pattern that describes a set of strings. It is made up of literal and meta characters, widely used for searching, replacing, and validating text.

Flag reference

g/Global: find all matches
i/Case-insensitive
m/Multiline: ^ and $ match at each line
s/Dot-all: . also matches newlines

Example

Phone: ^1[3-9]\d+$; Email: ^[\w.+-]+@[\w-]+\.[\w.]+$