Live tool/tool/regex-tester

Regex Tester

Try a regular expression against sample text, inspect matches and capture groups, and catch syntax errors inline.

Developer ToolsValidationDebugging

Pattern

Flags

Use JavaScript regex flags like g, i, m, s, u, y, d, or v.

Sample text

Pattern status

Valid

Flags

Matches

Match 1

tools

Index 25

Match 2

tool

Index 65

Match 3

tool

Index 80