enytool

Regex Tester

Test regex patterns against text with live match highlighting. Free online regex tester.

Frequently asked questions

Regex Tester — Test Regular Expressions Online Free

Write a regex pattern and see matches highlighted in real time against your test string. Supports JavaScript regex syntax with toggleable flags. Great for building and debugging regular expressions.

Live matching

Matches highlight as you type — both the pattern and test string are reactive.

Match details

See all match groups, indices, and captured groups.

Flag toggles

Toggle global, case-insensitive, multiline, and dotAll flags with buttons.