Regex Tester & Generator
Test regular expressions with real-time matching, capture groups, and common pattern snippets
Regular Expression
Test Text
Live Results
Ready to testReady to test
Enter a regex pattern and test text to see results.
Common Regex Patterns
Email Validation
Validates email addresses
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9....Example: user@example.com
Phone Number (US)
Matches US phone numbers
^\(?([0-9]{3})\)?[-. ]?([0-9]{...Example: (555) 123-4567
URL Validation
Matches HTTP/HTTPS URLs
https?:\/\/(www\.)?[-a-zA-Z0-9...Example: https://www.example.com
Extract Numbers
Extracts all numbers
\d+Example: Price: $25.99
Credit Card
Validates major credit card formats
^(?:4[0-9]{12}(?:[0-9]{3})?|5[...Example: 4532015112830366
IPv4 Address
Validates IPv4 addresses
^(?:(?:25[0-5]|2[0-4][0-9]|[01...Example: 192.168.1.1
Hex Color
Matches hex color codes
^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{...Example: #FF5733
Date (YYYY-MM-DD)
Matches ISO date format
^\d{4}-\d{2}-\d{2}$Example: 2024-12-25
Regex Guide
Common Symbols
.- Any character*- Zero or more+- One or more?- Zero or one^- Start of string$- End of string
Character Classes
\d- Any digit\w- Word character\s- Whitespace[a-z]- Lowercase letters[0-9]- Numbers[^x]- Not x
Flags
g- Global (find all)i- Case insensitivem- Multilines- Dot matches newline
About Regex Tester
A powerful regular expression testing tool with real-time matching, common patterns library, and detailed match information for debugging and development.
About The Free QR Code Generator
Generate custom QR codes and barcodes for free with our easy-to-use online tool. Add your logo, choose custom colors and frames, and download high-resolution QR codes that are perfect for printing or sharing online.
Key Features
- Generate QR codes for URLs, Text, Email, Phone, SMS, WiFi, vCard, and more.
- Customize QR code colors, background, and frames.
- Add your own logo or image to the center of the QR code.
- Download QR codes in high-resolution PNG, JPG, or SVG format.
- Create barcodes in various formats (Code 128, Code 39, EAN, UPC).
Perfect For
- Sharing your website or social media profile.
- Providing contact information via vCard.
- Simplifying WiFi access for guests.
- Promoting your business with scannable coupons.
- Tracking marketing campaigns with custom QR codes.
Pro Tips for Effective QR Code Usage:
- Use a clear and contrasting color scheme for easy scanning.
- Test your QR code with multiple scanner apps before publishing.
- Add a call to action (e.g., "Scan Me!") to encourage engagement.
- Use a short URL to ensure your QR code isn't too dense.
Frequently asked questions
Is this regex tester free?▾
Yes. It is completely free with no signup, and everything runs locally in your browser, so your data never leaves your device.
Does it match in real time?▾
Yes — matches and capture groups highlight live as you type your pattern and test string, with flags like global, ignore-case and multiline.
Which regex flavor does it use?▾
JavaScript (ECMAScript) regular expressions, the same engine your browser and Node.js use.