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Regex Pattern Generator

Find the right regex pattern for common use cases. 23 predefined patterns with descriptions and test functionality. Free regex reference tool.

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Regex Pattern Generator

Search Patterns
Email Address
Common
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$
Matches standard email addresses
Example: user@example.com
URL
Common
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&/=]*)
Matches HTTP/HTTPS URLs
Example: https://example.com/path
Phone Number (US)
Common
^(\+1)?[-.\s]?\(?[0-9]{3}\)?[-.\s]?[0-9]{3}[-.\s]?[0-9]{4}$
Matches US phone numbers in various formats
Example: (555) 123-4567
Phone Number (International)
Common
^\+?[1-9]\d{1,14}$
Matches international phone numbers (E.164 format)
Example: +442071234567
Date (YYYY-MM-DD)
Date/Time
^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$
Matches ISO 8601 date format
Example: 2024-12-25
Date (MM/DD/YYYY)
Date/Time
^(0[1-9]|1[0-2])\/(0[1-9]|[12]\d|3[01])\/\d{4}$
Matches US date format
Example: 12/25/2024
Time (24h)
Date/Time
^([01]\d|2[0-3]):[0-5]\d(:[0-5]\d)?$
Matches 24-hour time format
Example: 14:30:00
IPv4 Address
Network
^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$
Matches valid IPv4 addresses
Example: 192.168.1.1
IPv6 Address
Network
^([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$
Matches full IPv6 addresses
Example: 2001:0db8:85a3:0000:0000:8a2e:0370:7334
MAC Address
Network
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$
Matches MAC addresses
Example: 00:1B:44:11:3A:B7
Hex Color
Web
^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$
Matches hex color codes (3 or 6 digits)
Example: #ff5733
HTML Tag
Web
<([a-z][a-z0-9]*)\b[^>]*>(.*?)<\/\1>
Matches HTML opening and closing tags
Example: <div>content</div>
CSS Class Selector
Web
\.[a-zA-Z_][a-zA-Z0-9_-]*
Matches CSS class selectors
Example: .my-class
Username
Validation
^[a-zA-Z0-9_-]{3,16}$
Matches usernames (3-16 chars, alphanumeric, underscore, hyphen)
Example: john_doe123
Strong Password
Validation
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$
At least 8 chars with uppercase, lowercase, number, special char
Example: P@ssw0rd!
Credit Card Number
Financial
^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|3[47][0-9]{13})$
Matches Visa, Mastercard, and Amex card numbers
Example: 4111111111111111
SSN (US)
Financial
^\d{3}-\d{2}-\d{4}$
Matches US Social Security Numbers
Example: 123-45-6789
ZIP Code (US)
Location
^\d{5}(-\d{4})?$
Matches US ZIP codes (5 or 9 digit)
Example: 90210
Slug (URL-friendly)
Web
^[a-z0-9]+(-[a-z0-9]+)*$
Matches URL-friendly slugs
Example: my-blog-post
UUID v4
Identifiers
^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$
Matches UUID version 4 format
Example: 550e8400-e29b-41d4-a716-446655440000
JSON Key-Value
Data
"([^"]+)"\s*:\s*"([^"]+)"
Matches JSON key-value string pairs
Example: "name": "John"
Number (Integer or Decimal)
Numbers
^-?\d+(\.\d+)?$
Matches positive/negative integers and decimals
Example: -42.5
Whitespace Cleanup
Text
\s{2,}
Matches 2+ consecutive whitespace characters
Example: too many spaces
Test a String

About Regex Pattern Generator

Regex Pattern Generator is a free browser-based tool on QuickFnd. Find the right regex pattern for common use cases. 23 predefined patterns with descriptions and test functionality. Free regex reference tool. No installation or account required — runs entirely in your browser on desktop and mobile.

Why use Regex Pattern Generator?

  • Use Regex Pattern Generator instantly in your browser — no download or account required.
  • Get results in seconds with a focused interface built for speed and efficiency.
  • Works across desktop, tablet, and mobile browsers without any app install.
  • Bookmark this page for quick repeat access whenever you need Regex Pattern Generator.

How to use it

1

Open Regex Pattern Generator on this page and locate the input area.

2

Paste or type the content you want to process.

3

Adjust any available settings or options provided by the tool.

4

Copy or download the result and use it in your workflow.

Best use cases

Browser-based tasks that would otherwise require software downloads

Developer, writer, and marketer productivity workflows

Processing or validating text, data, or file content online

Repetitive tasks that benefit from a dedicated, focused tool

Popular search variations

QuickFnd also organizes more specific landing pages related to Regex Pattern Generator for different search intents.

Frequently asked questions

What does Regex Pattern Generator do?

Regex Pattern Generator is a free browser-based tool on QuickFnd. Find the right regex pattern for common use cases. 23 predefined patterns with descriptions and test functionality. Free regex reference tool.

Is Regex Pattern Generator free to use?

Yes. Regex Pattern Generator is completely free — no account, subscription, or download required. It runs entirely in your browser.

Does Regex Pattern Generator work on mobile?

Yes. QuickFnd tools work on all modern browsers including Chrome, Safari, Firefox, and Edge on both desktop and mobile.

Is my data safe when using Regex Pattern Generator?

Regex Pattern Generator runs client-side in your browser. Input data is processed locally and not sent to external servers unless the tool explicitly requires an AI or API call.

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