Regex Tester

Test regular expressions with live highlighting, groups and replace preview.

Runs entirely in your browser. Nothing you type or paste is sent anywhere.

Regular expression

Pattern

g find every match, not just the first

Type a pattern above, or pick a common pattern to load an example.

Replace with

$1 or $<name> inserts a group, $& the whole match and $$ a dollar sign.

The text with every match replaced appears here.