Enter a regular expression in the top text area; double-click in
the bottom area to enter the target input to match. As soon as you tab,
[esc], or click out of the bottom area, matching will begin.
You can choose between Perl/PHP-like or Java regular expression syntax,
and whether the target text is highlighted to show matches, edits,
replacements, or splits.
The animate option lets you watch the regex engine at work.
Creating a matchmark sends your browser to a bookmarkable
URI that will reproduce the current regex pattern, settings, and
Clicking a match gives more info, including how the capturing groups
Regex Powertoy was created by Gordon Mohr.
Please visit my blog to leave questions,
comments, and suggestions. There is also a technical