🔍 Regex Tester

How to Use the Regex Tester

1. Enter your regex pattern in the Regex Pattern input box.
2. Toggle the flags g, i, and m as needed to customize matching behavior.
3. Type or paste the text you want to test against in the Test Text area.
4. Optionally, enter a replacement string in the Replace With input to preview replacements.
5. View highlighted matches in the test text area below and the replacement preview in real-time.
6. If your regex is invalid, error messages will appear to help you fix it.
7. Use preset buttons to quickly load common regex patterns like Email, URL, or Phone.
8. Copy your regex, test text, or matched results with the handy buttons for easy sharing or use elsewhere.

Real-World Use Cases

This Regex Tester is perfect for anyone working with regular expressions in various contexts:

• Developers crafting regex for form validation, search, or parsing tasks.
• QA engineers verifying regex-based input validation rules.
• Data analysts extracting structured data from text logs or reports.
• Students and learners practicing regex with immediate feedback.