W-Shadow.com

Say you stumble upon a WordPress blog that has a gorgeous design. Amazed, you wonder what theme they’re using. Of course, it would be straightforward to just email the blog’s author and ask, but it might take a few hours (or days) until they get back to you. Here are three simple ways to identify a WP theme in less than five minutes.

1. Check the page footer.

This is usually the quickest way to identify a theme. Just scroll down to the end of the page and look for “Theme X designed by Y” or something similar. Most free WordPress themes include the name of the theme and/or a link to the author’s site in the footer section.

2. Examine theme-related URLs in the source code.

If you can find no mention of the blog’s theme on the page itself, it’s time to examine the source code. Go to View -> Source and press Ctrl+F to open the “Find” dialog. Enter /wp-content/themes/ to locate any theme-related URLs in the HTML. Often you will be able to guess the theme’s name from a stylesheet or image URL.

For example, an URL like this indicates the blog is using a theme called “My Cool Design” :
http://example.com/wp-content/themes/my_cool_design/style.css

3. View theme headers.

There’s one last thing you can try “on the spot” : theme headers. All WordPress themes must include a style.css file that contains a special header comment. This header lists details like the theme name, homepage, author’s name, etc. style.css is simply a normal CSS file, so this information is plainly visible to anyone who bothers to look – just find the URL pointing to style.css in the source code and open it in your browser.

If that didn’t work…

In that case, chances are the site in question is using a custom theme. Also, the blogger might be a bit paranoid about security (not that it’s a bad thing)