ScaleWhite Tools

Regex Tester

Test and debug regular expression patterns in real time.

What is this tool?

A tool to test regular expression patterns in real time. Match results are displayed as you type the pattern, making it ideal for debugging regex.

How to use

  1. Enter a regular expression pattern.
  2. Select flags (g, i, m, s) as needed.
  3. Enter test text and match results will be displayed in real time.

Examples

  • Test email address validation patterns.
  • Verify regex for extracting patterns from log files.
  • Debug regular expressions for URL parsing.