Shrink the Stack Exchange footer — https://stackapps.com/q/7091/34727

shrink-footer.css

/**
 * Copyright © 2016 Jed Fox
 *
 * (The MIT License)
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject
 * to the following conditions:
 *
 * - The above copyright notice and this permission notice shall be
 *   included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
/* Warning: this does not move the revision onto the same line anymore. */
#footer-sites {
    display: none !important;
}

#footer #copyright, #footer #svnrev {
    display: inline-block !important;
}

#footer #svnrev::before {
    content: "//";
    margin: 0.25em;
}

shrink-footer.user.js

// ==UserScript==
// @name         Shrink the Footer
// @namespace    https://stackapps.com/questions/7091/34727
// @version      0.1
// @description  shrinks the SE footer
// @author       J F
// @license      MIT
// @grant        none
// @match        https://(.+\.)?(askubuntu|mathoverflow|superuser|serverfault|stack(overflow|exchange|apps))\.com(/.*)?
// ==/UserScript==
var link = document.createElement('link')
link.rel = 'stylesheet'
link.href = 'https://cdn.rawgit.com/j-f1/4b07b900ea3d78409c80b190099d15f4/raw/75f05809b9ae3cd73c0b5d083a7b05bef57bf51a/shrink-footer.css'
document.getElementsByTagName('head')[0].appendChild(link)
$('#svnrev').appendTo($('#copyright')) // move the copyright inline