Archive.org Lookup

Searches archive.org for captures of the current webpage.

javascript:window.open("https://web.archive.org/web/*/"+window.location.href)

Clean Ellucian Banner Transcript

Banner is hot garbage and their unofficial transcript page looks disgusting. This helps make things look nicer for printing. [Unminified]

javascript:function d(a){var b=0;return function(){return b<a.length?{done:!1,value:a[b++]}:{done:!0}}}document.getElementsByClassName("pageheaderdiv1")[0].remove();document.getElementsByClassName("headerlinksdiv")[0].remove();document.getElementsByClassName("plaintable")[0].remove();document.getElementsByClassName("headerwrapperdiv")[0].style.paddingTop=0;
[].concat(function(a){if(!(a instanceof Array)){var b="undefined"!=typeof Symbol&&Symbol.iterator&&a[Symbol.iterator];a=b?b.call(a):{next:d(a)};for(var c=[];!(b=a.next()).done;)c.push(b.value);a=c}return a}(document.getElementsByClassName("pagebodydiv")[0].childNodes)).map(function(a){a.nodeType!=Node.TEXT_NODE&&"A"!=a.tagName||a.remove()});document.styleSheets[1].insertRule("tr{break-inside:avoid}");

Copy Amazon Link

Copies a minified version of the current Amazon store page without all the gross tracking crap.

javascript:(function(){var a=window.location.pathname,b=/(\/\w{0,3}\/\w+)\/?(ref)?/.exec(a);a=window.location.origin+(b?b[1]:a);history.pushState(void 0,void 0,a);b=document.createElement("textarea");b.value=a;document.body.appendChild(b);b.select();document.execCommand("copy");document.body.removeChild(b)})()

Enable Selection

For when websites are jerks and don’t want you selecting stuff.
[Unminified]

document.g=null;document.oncontextmenu=null;document.onkeydown=null;document.onselectstart=null;document.onmousedown=null;document.onclick=null;document.body.onselectstart=null;document.body.onmousedown=null;document.body.classList.remove("unselectable");document.documentElement.style.userSelect="auto";document.body.style.cursor="auto";

Google Play App Beta

Activate this bookmarklet on a Google Play app page to enroll in the beta program (if there is one).

javascript:window.location="https://play.google.com/apps/testing/"+window.location.href.match(/https:\/\/play\.google\.com\/store\/apps\/details\?id=([\w.]+)/)[1]

Google Play Music Cover Art

Activate this bookmarklet on an album page on Google Play to grab some high-resolution cover art.

javascript:open(document.getElementsByClassName("cover-image")[0].src.replace("w300-rw", "w16383-rw"))

ICANN WHOIS

Looks up the WHOIS record of the current domain.

javascript:window.open("https://whois.icann.org/en/lookup?name="+window.location.hostname)

New York Times Paywall Bypass

javascript:document.cookie="nyt-m=;expires=Thu, 01 Jan 1970 00:00:01 GMT;domain=.nytimes.com;path=/";location.reload()

noquery

Removes from the address bar the crap after the question mark in the current URL.

javascript:history.pushState({}, '', window.location.protocol + '//' + window.location.host + window.location.pathname)

PageSpeed Insights

Runs the current webpage through Google PageSpeed Insights to get suggestions for making the webpage faster.

javascript:window.open("https://developers.google.com/speed/pagespeed/insights/?url="+window.location.href)

Spotify Cover Art

Opens the cover art from a Spotify album page in a new tab.

javascript:let srcset = document.body.querySelectorAll("img[srcset]")[0].srcset.split(", "); open(srcset[srcset.length - 1].split(" ")[0])

Steam Gem Value

Activate this bookmarklet on an item listing in the Steam Community Market to find out how much an item is worth in gems. For details on how this works, see this Arqade answer.

javascript:var a=g_rgAssets[Object.keys(g_rgAssets)[0]],b=a[Object.keys(a)[0]],c=b[Object.keys(b)[0]],gem_action=c.owner_actions&&c.owner_actions.filter(function(d){return/javascript:GetGooValue/.test(d.link)})[0];if(gem_action){var matches=gem_action.link.match(/javascript:GetGooValue\( '%contextid%', '%assetid%', (\d+), (\d+), \d+ \)/);fetch("https://steamcommunity.com/auction/ajaxgetgoovalueforitemtype/?appid="+matches[1]+"&item_type="+matches[2]+"&border_color=0").then(function(d){return d.json()}).then(function(d){alert("This is worth "+d.goo_value+" gems")})["catch"](function(d){return console.error(d)})}else alert("This is worth 0 gems");

Unhide Reddit Downvote Arrows

For those times when subreddit moderators have disabled downvotes but you still gotta be a jerk anyway.

javascript:(function(){var a=document.getElementsByClassName("down"),b;for(b in a)a[b].style.display="block"})()

Targeter

Tap/click somewhere and get a best effort guess for a target to use to jump to that part of the page. Probably doesn’t work very well.
[Unminified]

function b(a){document.body.style.cursor="default";document.removeEventListener("click",b,!1);a=a||window.event;a=a.target||a.srcElement;a=a==document.body?null:a.id?a.id:a.name?a.name:void 0;for(console.log("I think the ideal target would be "+a.id);!a.id;){console.log(a);if(a==document.body)return;a=a.previousElementSibling||a.parentNode}console.log(a)}document.addEventListener("click",b,!1);document.body.style.cursor="crosshair";

Vine Downloader

Opens the MP4 from a single Vine’s page.

javascript:open("http://v.cdn.vine.co/r/videos_dashhd/"+/https:\/\/v\.cdn\.vine\.co\/r\/videos\/(.*).jpg/.exec(document.getElementsByTagName("video")[0].poster)[1])

Web of Trust

Opens the Web of Trust reputation page for the current domain or subdomain.

javascript:open("https://www.mywot.com/scorecard/"+window.location.host)

Website Grader

Runs the current domain through HubSpot’s Website Grader, checking for basic performance and SEO issues.

javascript:window.open("https://website.grader.com/results/"+window.location.hostname)

WIRED Paywall Bypass

javascript:document.cookie="pay_ent_smp=;expires=Thu, 01 Jan 1970 00:00:01 GMT;domain=.wired.com;path=/";location.reload()

YELL

Uppercases the selected text.

javascript:(()=>{var selection = window.getSelection();var original = selection.anchorNode.textContent;selection.anchorNode.textContent = selection.anchorNode.textContent.replace(original, original.toUpperCase());})();