Goo.gl URL shortener bookmarklet

google-url-shortener-bookmarklet.js

// Step 1: Get an API key here: https://developers.google.com/url-shortener/v1/getting_started#APIKey
// Step 2: Paste your api key below
// Step 3: Add the code below to your browser as a bookmark
// Step 4: Visit a non-goo.gl URL and click your bookmark

// NOTE: The security policy of some sites (such as this gist.github.com!) will prevent this from working.
//       Check your javascript console if something doesn't work.

javascript:(function(){
  var googleApiKey = 'INSERT YOUR API KEY HERE';
  if (googleApiKey == 'INSERT YOUR API KEY HERE') {
    alert('Error: You need to add your api key to this bookmarklet!');
    return;
  }
  var xhr = new XMLHttpRequest();
  var url = 'https://www.googleapis.com/urlshortener/v1/url?key=' + googleApiKey;
  xhr.open('POST', url, true);
  xhr.setRequestHeader('Content-type', 'application/json');
  xhr.onreadystatechange = function () {
    if (xhr.readyState === 4) {
      if (xhr.status === 200) {
        var json = JSON.parse(xhr.responseText);
        prompt('Your short URL is:', json.id);
      } else {
        alert('Shortener error: ' + xhr.responseText);
      }
    }
  };
  var data = JSON.stringify({'longUrl': window.location.href});
  xhr.send(data);
})();