toolvio.

Regex tester

Test JavaScript regular expressions with live match highlighting and groups.

Pattern
/ /
Flags
Test text

Matches

    Runs locally in your browser. Nothing is uploaded.

    How to use

    1. Enter the pattern and flags.
    2. Paste the text to test against.
    3. Matches are highlighted; groups are listed below.

    Questions

    Which regex flavor is this?

    JavaScript (ECMAScript). Most patterns from PCRE and Python work the same, except for lookbehind in older browsers and some named-group syntax.