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Regex Generator

Paste any text and instantly generate a regular expression to extract values, keywords, numbers, or custom patterns.

Input Text

Matches the exact value you enter — special characters are auto-escaped.

Generated Regex
Click Generate to build a regex.
Test Results
Generate a regex to see results.
Match Highlight
Matches will be highlighted here.
Code will appear here after generating a regex.

What is this tool?

The Regex Generator helps you create regular expressions without having to write them from scratch. Paste a sample text, choose an extraction mode, and get a ready-to-use regex plus code snippets in JavaScript, Python, or Auto.js.

Extraction Modes

  • Exact Value — generates a regex that matches a specific known value.
  • After Keyword — extracts the number that follows a keyword (e.g. "target level 99999").
  • All Numbers — extracts every integer and decimal number in the text.
  • Custom — extracts content between a custom prefix and suffix.

How to use

1. Paste your sample text in the input box. 2. Choose an extraction mode and fill in the parameters. 3. Click Generate — the regex, test results, and highlighted matches appear instantly. 4. Switch between JavaScript, Python, and Auto.js to copy the code you need.

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