Lot of custom functions are ready to use. Just give a tick mark. Which one you tick only those functions will load. No extra css or js. Some of the functions are
- Change amount of posts on the home page.
- Change amount of posts on the search page.
- Change length of excerpt.
- Automatically mark as spam all comments with an url longer than set chars.
- Set the post revisions unless the constant was set in wp-config.php already.
- Control When Your Posts are Available via RSS.
- Automatically empty trash after set days.
- Change Admin footer.
- Add favicon to head.
- Remove unnecessary links from wp_head.
- Redirect to home page after login.
- Hide admin bar from front end for non admin.
- Disable back end access for non admin users.
- Login with both Email/username.
- Show only own uploaded media in library.
- Restrict user to upload only jpg,jpeg,png,gif type of media.
- Stop images getting wrapped up in p tags when they get dumped out with the_content() for easier theme styling,
- Call the google CDN version of jQuery for the frontend.
- Call Googles HTML5 Shim, but only for users on old versions of IE.
- Change login screen error messages to “Think you have gone wrong somwhere!”.
- Show post thumbnail in RSS Feeds.
- Disable RSS Feeds.
- Display the Most Accurate Comment Count.
- Custom admin menu link for all settings.
- Enable admin to set custom background images in ‘appearance > background’.
- Remove pings to self.
- Sharpening resized jpg images.
- Enable Gzip.
- Prevent user email change from profile.
- Block comments with no-referrer.
- Remove word “Private: ” infront of title of private post/page.
- Disable the theme/plugin editor in Admin.
- Disallow anything that creates, deletes, or updates core, plugin, or theme files.
- No more jumping for read more link.
- Enable custom Breadcrumbs.
- Disable Search in WordPress.
- Disable Admin nag.
- Remove wordpress version number.
For more details please visit Custom Functions Plugin