Regex Tester & Debugger

Live testing for your regular expressions with match highlighting.

/ /

What is Regex?

Regular Expressions (Regex) are patterns used to match character combinations in strings. They are incredibly powerful for data validation, searching, and replacing text.

How to use this tester

  1. Enter your pattern in the first box.
  2. Add flags like 'g' (global), 'i' (ignore case), or 'm' (multiline) if needed.
  3. Type or paste your text. Matches will be highlighted automatically.