What is Regex?
Regular Expression (Regex) is a powerful text matching tool used for searching, validating, and replacing text patterns. It is widely used in programming languages, text editors, and data processing tools. Our regex tester provides real-time match highlighting to help you quickly test and debug regular expressions.
How to Use
- Enter your regex pattern in the "Regular Expression" input field.
- Enter the test text in the "Test String" input field.
- The tool will display matching results with real-time highlighting.
- Select matching flags (global, case-insensitive, multiline, etc.).
- Quickly access templates from the common regex pattern library.
Features
- ✓ Real-time Match Highlighting
- ✓ Global Match Support
- ✓ Case-Insensitive
- ✓ Multiline Mode
- ✓ Common Regex Library
- ✓ Match Group Display
- ✓ Replace Functionality
- ✓ Free, No Signup
FAQ
What is a regular expression?
A regular expression is a syntax used for matching text patterns. It can be used to search, validate, and replace text, making it a powerful tool for working with string data.
What are some common regular expressions?
Common regex patterns include: email validation, phone number validation, URL validation, IP address validation, and more. Our tool includes a library of common regex patterns for your reference.
Do I need to sign up to use this tool?
No! Our regex tester is completely free with no signup or login required.