Regex Tester

Test JavaScript regular expressions with live matches.

Pattern

Flags

Test string

2 matches

Contact alice@example.com or bob@test.org for details.

Was this tool helpful?

What is Regex Tester?

The FreeGeron Regex Tester lets you test, debug, and validate regular expressions in real time. Built for speed and simplicity, it works entirely in your browser with no sign-up, no downloads, and no limits. Whether you are a student, professional, creator, or casual user, this free tool gives you fast, accurate results in seconds so you can focus on what matters.

How to use Regex Tester

Open the Regex Tester on this page.
Enter or upload the information required by the tool.
Adjust any available options to match your needs.
Click the action button to get your result instantly.
Copy, download, or share the result wherever you need it.

Common use cases

Quickly running Regex Tester during local development without setting up a CLI.
Validating, formatting, or testing data while debugging.
Sharing a quick reference link with teammates in pull requests.
Replacing scattered VS Code extensions with one browser tool.

Frequently Asked Questions

Is the Regex Tester free to use?

Yes, it is 100% free with no sign-up, subscription, or hidden costs.

Do I need to create an account?

No account is required. The tool works instantly in your browser.

Is my data safe?

Yes, your input is processed securely and never sold or shared with third parties.