MatrixAdapt | Logiciel de gestion d'Entreprise, Création et référencement des sites web

The Webmaster Tools GData API has been updated to allow you to get even more out of Webmaster Tools, such as setting a geographic location or your preferred domain. For those of you that aren't familiar with GData, it's a protocol for reading and writing data on the web. GData makes it very easy to communicate with many Google services, like Webmaster Tools. The Webmaster Tools GData API already allows you to add and verify sites for your account and to submit Sitemaps programmatically. Now you can also access and update site-specific information. This is especially useful if you have a large number of sites. With the Webmaster Tools API, you can perform hundreds of operations in the time that it would take to add and verify a single site through the web interface.
What can I do?
We've included four new features in the API. You can see and update these settings for each site that you have verified. The features are:

• Crawl Rate: You can request that Googlebot crawl your site slower or faster than it normally would (the details can be found in our Help Center article about crawl rate control). If many of your sites are hosted on the same server and you know your server's capacity, you may want to update all sites at the same time. This now a trivial task using the Webmaster Tools GData API.
• Geographic Location: If your site is targeted towards a particular geographic location but your domain doesn't reflect that (for example with a .com domain), you can provide information to help us determine where your target users are located.
• Preferred Domain: You can select which is the canonical domain to use to index your pages. For example, if you have a site like www.example.com, you can set either example.com or www.example.com as the preferred domain to use. This avoids the risk of treating both sites differently.
• Enhanced Image Search: Tools like the Google Image Labeler allow users to tag images in order to improve Image Search results. Now you can opt in or out for all your sites in a breeze using the Webmaster Tools API.

How do I do it?
We provide you with Java code samples for all the current Webmaster Tools API functionality. Here's a sample snippet of code that takes a list of sites and updates the geographic location of all of them:

  // Authenticate against the Webmaster Tools service
  WebmasterToolsService service;
  try {
    service = new WebmasterToolsService("exampleCo-exampleApp-1");
    service.setUserCredentials(USERNAME, PASSWORD);
  } catch (AuthenticationException e) {
    System.out.println("Error while authenticating.");
    return;
  }

  // Read sites and geolocations from your database
  readSitesAndGeolocations(sitesList, geolocationsList);

  // Update all sites
  Iterator sites = sitesList.iterator();
  Iterator geolocations = geolocationsList.iterator();
  while (sites.hasNext() && geolocations.hasNext()) {
    // Create a blank entry and add the updated information
    SitesEntry updateEntry = new SitesEntry();
    updateEntry.setGeolocation(geolocations.next());

    // Get the URL to update the site
    String encodedSiteId = URLEncoder.encode(sites.next(),
        "UTF-8");
    URL siteUrl = new URL(
        "http://www.google.com/webmasters/tools/feeds/sites/"
        + encodedSiteId);

    // Update the site
    service.update(siteUrl, updateEntry);
  }
Where do I get it?
The main page for the Webmaster Tools GData API explains all the details of the API. It has a detailed reference guide and also many code snippets that explain how to use the Java client library, which is available for download. You can find more details about GData and all the different Google APIs in the Google Data API homepage.

Written by Javier Tordable, Software Engineer

Ever since we released the crawl errors feature in Webmaster Tools, webmasters have asked for the sources of the URLs causing the errors. Well, we're listening! We know it was difficult for those of you who wanted to identify the cause of a particular "Not found" error, in order to prevent it in the future or even to request a correction, without knowing the source URL. Now, Crawl error sources makes the process of tracking down the causes of "Not found" errors a piece of cake. This helps you improve the user experience on your site and gives you a jump start for links week (check out our updated post on "Good times with inbound links" to get the scoop).

In our "Not Found" and "Errors for URLs in Sitemaps" reports, we've added the "Linked From" column. For every error in these reports, the "Linked From" column now lists the number of pages that link to a specific "Not found" URL.



Clicking on an item in the "Linked From" column opens a separate dialog box which lists each page that linked to this URL along with the date it was discovered. The source URL for the 404 can be within or external to your site.





For those of you who just want the data, we've also added the ability to download all your crawl error sources at once. Just click the "Download all sources of errors on this site" link to download all your site's crawl error sources.



Again, if we report crawl errors for your website, you can use crawl error sources to quickly determine if the cause is from your site or someone else's. You'll have the information you need to contact them to get it fixed, and if needed, you can still put in place redirects on your own site to the appropriate URL. Just sign in to Webmaster Tools and check it out for your verified site. You can help people visiting your site—from anywhere on the web—find what they're looking for.

Written by Jonathan Simon, Webmaster Trends Analyst and Michael Williamson, Webmaster Tools Intern