Add Favicons to External Links

This little JavaScript bookmarklet will add favicons and some CSS styles to all external hyperlinks on a web page. The favicon images of a website are fetched using Google’s favicon generator that was originally part of Google Reader. And here are some more useful bookmarklets for your browser.

// Highlight External Links by Amit Agarwal

// Published on 06/09/2012

// Find the domain name of the current page

var host = window.location.host;

// Use Google's Favicon Generator

var goog = "http://www.google.com/s2/favicons?domain=";

// Find all hyperlinks on a web page

var links = document.getElementsByTagName("a");

for (i=0; i<links.length; i++) {

var link = links[i];

// Skip all internal links where the href is the same as the domain host

// Also skip non HTTP links like FTP, MAILTO, etc.

if(link.href.match("^https?://") && !link.href.match(host)) {

var domain = link.href.split("/");

// Apply some CSS styles to the external hyperlinks

link.style.background = "url(" + goog + domain[2] + ") center left no-repeat";

link.style.fontWeight = "bold";

link.style.fontSize = "105%";

link.style.padding="5px 5px 5px 20px";

link.style.textDecoration="underline";

}