Regex Tester — Test Regular Expressions Online with Live Matching

Test Regex Patterns Live

Write regular expressions and see matches highlighted in real time.

How to Use

Open the Regex Tester tool

Enter your regex pattern

Paste your test string

See matches highlighted as you type

View capture groups and match details

Common Patterns

Pattern	Matches
\d+	Numbers
[a-zA-Z]+	Words
\b\w+@\w+\.\w+\b	Emails (basic)
^https?://	URLs

## FAQ What regex flavor is used?

JavaScript regex (same as browsers and Node.js).

Does it support flags?

Yes — global (g), case-insensitive (i), and multiline (m) flags.

Can I save patterns?

Copy the pattern for later use. Bookmark the page for quick access.