About This Tool
Our free online Regex Tester lets you write and test regular expressions directly in your browser. You can enter any text and apply your regex to see matches instantly. Perfect for developers, coders, and testers who need quick validation without installing tools.
Match Results
Frequently Asked Questions
Q: What is a regex tester?
A: A tool that helps you write and test regular expressions by showing matching text in real-time.
Q: Can I use flags like g, i, m?
A: Yes! Just include them in your regex, e.g., `/hello/gi`
Q: How do I highlight matches?
A: Matches are highlighted in yellow below the result section.
Q: Is this really free?
A: Yes! No cost, no registration, no ads — just paste and test.
Q: Can I download the result?
A: Yes! Click the "Download Matches" button to save the output as `.txt` file.