Regex Tester & Visualizer
Test regular expressions with live highlighting
Contains email pattern. Uses word boundaries. Matches lowercase letters.
Matches
found in text
hello@webgati.insupport@example.comHighlighted Result
Regex Tester — Test Regular Expressions Online Free
WebGati Regex Tester is a real-time regular expression testing environment for developers. Paste your regex pattern and test string, and instantly see all matches highlighted with color-coded results, capture groups, match indices, and flag support. Whether you're validating email formats, extracting data from logs, building form validation, or debugging complex patterns, this tool shows you exactly what your regex matches in real time as you type. Supports all standard regex flags: global (g), case-insensitive (i), multiline (m), dotAll (s), and unicode (u).
Power users often combine this utility with our Regex Builder and JSON Formatter Pro for maximum efficiency.
How to Use Regex Tester (Step-by-Step)
- 1
Enter Your Regex Pattern
Type your regular expression in the pattern field (without slashes).
- 2
Set Flags
Toggle g (global), i (case insensitive), m (multiline) flags as needed.
- 3
Enter Test String
Paste the text you want to test your regex against.
- 4
View Matches
Matches highlight in real time. View capture groups and match details below.
Key Features of Regex Tester
- Real-time
- Multi-Flag
- Highlighter
- Regex Guide
- 100% Free — No Account Required
- Browser-Based — Zero File Uploads
- Works on Mobile, Tablet & Desktop
- No Watermarks, No Limits
Common Use Cases
- →Test email validation regex patterns
- →Debug regex for form input validation
- →Extract data from log files with regex
- →Build regex for URL parsing and routing
- →Test regex for text transformation scripts
Frequently Asked Questions
Enjoying Regex Tester? 🚀
WebGati provides this tool for free. Help us keep it alive by sharing it with your network!
Embed on your website
Need a Custom Tool like this for your Business?
I build high-performance web apps, AI tools, and SaaS platforms. Let's build your next big idea.
Start a Project