🔍 Regex Tester
Test and debug your regex patterns instantly in your browser.
\d for digits, \w for words, and . for any character. 🔒 Secure: Logic runs in your browser. No data is sent to a server.
Regex Tester – Test & Validate Regular Expressions Online
What is This Tool?
The Regex Tester on TolkIt is a fast and user-friendly tool designed to help developers test, debug, and validate regular expressions (regex) in real time.
Regular expressions are powerful but can be tricky. A missing character or wrong symbol can break your pattern. This tool shows matches instantly, highlighting them in the text so you can fine-tune your expressions with confidence.
How to Test Your Regex
-
1Enter Pattern: Type your regular expression in the input field (e.g.,
^[a-z]+$). -
2Enter Test Text: Paste the sample text you want to match against in the text area.
-
3View Matches: As you type, matches are highlighted instantly. Check for errors or unexpected behavior in real-time.
Popular Use Cases
- Form Validation: Checking emails, phone numbers, and passwords.
- Data Scraping: Extracting specific patterns like URLs or dates from text.
- Search & Replace: Cleaning up data or refactoring code.
- Security: Validating input to prevent injection attacks.
Why Use This Tool?
Matches appear as you type, making debugging faster.
Identify syntax errors immediately before deploying code.
See exactly what parts of your string are being matched.
Great for beginners to experiment and understand regex behavior.
Frequently Asked Questions
Yes, this tool is fully compatible with JavaScript regex syntax.
Yes, you can enable modifiers like global (g), case-insensitive (i), and multiline (m).
Yes, the Regex Tester on TolkIt is completely free and unlimited.
Conclusion
The Regex Tester on TolkIt simplifies one of the most complex parts of programming. Whether you're debugging a script or learning regex for the first time, this tool provides the clarity and speed you need. Try validating a pattern now!