Regex Tester

Experiment with patterns against sample text. Everything runs locally—nothing is uploaded.

Pattern

Flags

Ignore case (i)

Global (g)

Multiline (m)

Dot all (s)

Test text

hello regex world

Matches

@0Full match: hello
@6Full match: regex
@12Full match: world

How to use

Enter a JavaScript-style pattern, toggle flags, and paste text to test. Invalid patterns show an error; valid patterns list each match index and captured groups when present.