Regex Tester

Regular Expression

Enter your regex pattern and flags

Pattern

Common Patterns

Flags Guide

g - Global (find all matches)

i - Case insensitive

m - Multiline

s - Dotall (. matches newline)

u - Unicode

y - Sticky

Test String

Enter text to test your regex against. The badge shows if the entire string matches the pattern.

0 characters

Replace

Test regex replacement functionality

Replacement String

Use $1, $2, etc. to reference capture groups