Update the length of the Excerpts on your website using this snippet.

Prevent WordPress from automatically creating pingbacks from your own site.

Force your users to login only using their username.

Prevent users who are not administrators from accessing the wp-admin area.

Use this snippet to remove query string from CSS & JS files and improve performance ratings.

Display the featured image in the list of posts in the admin.

Change the outgoing sender name and email address. Don't forget to edit the snippet with...

Prevent WordPress from adding the Windows Live Writer manifest link to your pages.

Customize the "Read More" text that shows up after excerpts.

Completely hide author archives and prevent direct access by returning a 404 page.

Make all the filenames of new uploads to lowercase after you enable this snippet.

Remove an extra request and prevent others from adding embeds in your site.

Remove head links to RSS Feeds from all the pages on your site.

Prevent users from using the Plugin & Theme file editor.

Prevent the Login box from shaking when entering the wrong password or username.