An online regular expression tool that helps analyzing regular expression structure.

This is a tool for parsing and analyzing the structure of a regular expression.

Currently it implements the Java, JavaScript and most of the Perl regular expression grammar. Just type in the regular expression. The parser will parse it on the fly and produce a tree like representation. Easy to understand. Have fun!

Please do not include the leading and trailing slash from your expresson. This utility only parses stuff in between /regex/.

This utility will double escape back slash. This is to make it possible to copy regular expression directly from Java source file to the analyzer. For example, \\s will be converted to \s before sending to the parser.

Just send out the following URL:

Currently, this utility can analyze Java, JavaScript, and Perl style of regular expressions. Analyzing addtional flavors may be added in the future.

If you run into any issues, please report to us. It will be even better if you fix it and send us the patch. Once you register and install this application in your account, you will have the complete source code and you can make changes as you wish. This is what MyEzApp is about: providing you with tools and resources, so you can make the internet work for you.

Thanks!