Regex Tester
Test regular expressions against text, live.
e.g. g, i, m
Embed this tool on your site
Free — a link back to LoopStook is included.
What is the Regex Tester?
Test regular expressions online for free. See every match, its index, and captured groups, live in your browser.
How to use the Regex Tester
- 1
Add your text
Paste or type your content into the Regex Tester.
- 2
Set any options
Adjust the available options to fit exactly what you need.
- 3
Copy or download the result
The output is generated instantly in your browser — copy it or download it. Nothing is uploaded to a server.
Frequently asked questions
Is the regex tester free?
Yes — it runs entirely in your browser, so it's free, private, and instant. Nothing is uploaded.
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