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Regex Helper Tool

Transform text using regular expressions with built-in patterns or create your own

1.⌘KFind pattern
2.⌘↵Transform
3.⌘⇧CCopy result

Input

(⌘1 to focus)
0 characters

Output

(⌘2 to focus)
0 characters
No pattern selected

Select a pattern or enter custom regex above

Use ⌘K to find patterns

Transformation Patterns

Discover regex patterns for text transformation - refreshed on each page load to help you find new tools.

Path: Dot to Slash

Transform dot notation import paths to slash notation - perfect for converting Python imports to file paths or switching between different module systems

From: app.services.user
To: app/services/user

CamelCase to kebab-case

Transform camelCase variable names to kebab-case for CSS classes, HTML attributes, or URL-friendly formats - essential for frontend developers

From: myVariableName
To: my-variable-name

CamelCase to snake_case

Transform camelCase JavaScript variables to snake_case for Python, Ruby, or database column names - perfect for cross-language development

From: myVariableName
To: my_variable_name

Extract URLs

Quickly extract all HTTP and HTTPS URLs from any text - perfect for analyzing content, gathering links, or cleaning up documentation

From: Visit https://example.com and https://test.com for more information.
To: https://example.com https://test.com

Extract Email Addresses

Find and extract all email addresses from any text content - ideal for data analysis, contact list building, or content scraping

From: Contact john.doe@example.com or jane@test.co.uk for support.
To: john.doe@example.com jane@test.co.uk

Comma to Newline

Transform comma-separated lists into clean line-by-line format - perfect for converting CSV data to readable lists or preparing data for processing

From: apple, banana, cherry, date
To: apple banana cherry date

Need a different transformation? Use the command palette above or browse all patterns.

⌘K to search all patterns

Manage Patterns

Pattern Management

Import Patterns

Export Patterns

About Regex Helper

The Regex Helper Tool allows you to transform text using regular expressions. It comes with a set of built-in patterns for common transformations, and you can create your own custom patterns.

Features

  • Built-in patterns for common transformations
  • Create and save your own custom patterns
  • Import and export patterns to share with others
  • Keyboard shortcuts for efficient workflow
  • Command palette for quick pattern search (⌘K)

How to Use

  1. Select a pattern from the list or search using the command palette (⌘K)
  2. Enter your text in the input area
  3. Click "Transform" or press ⌘+Enter to apply the transformation
  4. Copy the result from the output area

Creating Custom Patterns

You can create your own custom patterns by clicking the "Create Pattern" button. Each pattern consists of:

  • Name: A descriptive name for the pattern
  • Description: A brief explanation of what the pattern does
  • Search Regex: The regular expression pattern to search for
  • Replace Regex: The replacement pattern
  • Example: An example input and expected output