Zach Schnackel

Roots Plug is the catch-all awesome WordPress plugin that cleans up default output and provides all those handy-dandy functions that we all search for around the web – in one convenient package! It also appends on <a href="http://html5boilerplate.com/" rel="nofollow ugc">HTML5 Boilerplate’s</a> <code>.htaccess</code> rewrites automagically.
Inspired by <a href="http://rootstheme.com" rel="nofollow ugc">Roots Theme</a> by Ben Word — extracted much of the cleanup efforts into a handy-dandy plugin.

Roots Plug

Catch-all awesomeness for a leaner, meaner WordPress site.

Bjoern

When inserting an image into a posts WordPress uses absolute urls (i.e. including domain name) for the src and href attributes of the image and associated link. This leads to problems if you change your domain (e.g. when moving from test to production environment) or if you change the base path of your upload directory. Also usage of relative URLs (i.e. absolute path to file without domain part) can reduce file size, but may not be used in feeds.
Dynamic Links replaces all links to files in the upload directory with a placeholder which is replaced again with the base path to the upload dir when the content is viewed. This way image links are dynamically adapted to changes in domain name or upload base path.
As additional option relative links can be used when content is display on your site to reduce page size (Though there are better options to do this. It’s just included because it’s possible). Images and links in feeds will always get the full path.
<h3>License</h3>
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2, as published by the Free Software Foundation. 
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Dynamic Links

Makes links to files in upload directory of wordpress in posts (e.g. images) "dynamic". Allows use of relative image URLs in Posts and makes …

Roots Plug vs Dynamic Links