How To

Type/paste in your regex and the text you want it to match. Each time you click the "Update Map" button, the regex map is updated, with letter coloring in the text, matching the color of the corresponding letter/term in the regex.

You can then improve your regex, and click the "Update Map" button again.

Furthermore, you can click on each specific letter in the color mapped regex, and see its matched letter(s) highlighted in the color mapped text.

You can also click on a letter in the color mapped text, and see the matching regex letter/term highlighted.

In the color mapped regex, you can also click on a parenthesis and see its closing parenthesis highlighted.

Click again on a highlighted letter, to remove its highlighting.

When a substring or letter is not matched, it will have a black border box around it.