Test regular expressions
Want a deeper walkthrough? Read our complete guide to Regex Tester →
Regex Tester lets you write a regular expression and test it against sample text in real time, highlighting matches and capture groups as you type.
It is the fastest way to build and debug patterns without running code. All matching happens locally.
It uses JavaScript regular expression syntax, which is similar to most common flavors.
Yes, you can apply standard flags such as g, i, m, and s.
Yes, matched groups are highlighted so you can verify your captures.
