//gi
2 matches
“hello@toolora.com” at index 12
Group 1: hello
Group 2: toolora.com
“support@example.org” at index 33
Group 1: support
Group 2: example.org
How to use
01
Enter a regex
Type the pattern between the slashes. We add them for you.
02
Pick flags
Toggle global, case-insensitive, multiline, or dotAll.
03
See live matches
Matches are highlighted in real time.
Why Regex Tester
- Live results as you type, no Run button needed.
- Captures groups so you can see what each part matches.
- 100% client-side. Your text never leaves your browser.
Common questions
Is Regex Tester free to use?
Yes. Regex Tester is completely free. There is no sign up, no trial, and no usage cap.
Do I need an account to use Regex Tester?
No. You can start using Regex Tester straight away. We do not ask for an email address or a login.
Is my data uploaded to a server when I use Regex Tester?
No. Regex Tester runs entirely inside your browser, so the code or data you enter never leaves your device and nothing is sent to us.
Do you store the code or data I use with Regex Tester?
No. Because everything happens locally in your browser, there is nothing for us to store. Close the tab and it is gone.
Can I paste minified or messy code into Regex Tester?
Yes. Regex Tester handles compact, minified, or untidy input and processes it the same way.
Does Regex Tester flag errors in my input?
Where it applies, Regex Tester points out where something looks invalid so you can fix it quickly.
How do I use Regex Tester?
Enter or paste your code or data and Regex Tester updates the result as you go. When it looks right, copy or download it with one click.
Does Regex Tester work on phones and tablets?
Yes. Regex Tester is responsive and works in any modern browser on mobile, tablet, and desktop.
Which browsers does Regex Tester support?
It works in current versions of Chrome, Firefox, Safari, and Edge. For the best experience, keep your browser up to date.
Is there a limit on how often I can use Regex Tester?
No. You can use Regex Tester as many times as you need, at no cost.
Can I use Regex Tester for commercial or client work?
Yes. You are free to use the output in personal, educational, and commercial projects.
Why is Regex Tester free?
The site is supported by advertising, which lets us keep every tool free and open to everyone.
What should I do if Regex Tester gives an unexpected result?
First check that your code or data is formatted as expected. If something still looks wrong, use the feedback link on the page and we will take a look.