Shorten your URL with Goo.gl or Bit.ly in Asp.net using C#

While building an e-commerce web application, I realized that every e-commerce site needs social media button on the product detail page so that visitors can share what they have found. Of course you can let them share an URL like:

http://www.mydomain.com/cars/audi/Audi-R8-V12-TDI-Le-Mans

But since the twitter limit of 140 chars and the URL having 57, you can only share a message of 82 chars (with space) which is kind of short.

ps. when URL rewriting, consider using a dash instead of plus or underscore character

So in order to have good URL’s for social sharing, you should shorten your URL’s

I have made a test with Asp.Net C# comparing the famous bit.ly and goo.gl (which officially only works from the Google toolbar)

Bit.ly

For Bit.ly, I used this DLL from this website: http://sites.google.com/site/bitlyapp/

After I included it in my project, I made a helper method:

internal static string GetBitLy(string urlToShorten)

{

    string urlShort = "";

    if (urlToShorten.Length > 0)

    {

        try

        {

            urlShort = Bitly.API.Bit(Util.GetConfig("BitlyUser"),

                                     Util.GetConfig("BitlyApiKey"),

                                     urlToShorten,

                                     "Shorten");

        }

        catch (Exception ex)

        {

            // magic errorlogging goes here

        }

    }

    if (urlShort.Length > 0) // this check is if your bit.ly rate exceeded

        return urlShort;

    else

        return urlToShorten;

}




My Util.GetConfig does:




ConfigurationManager.AppSettings.Get(key);




Only then with Caching and error handling and it saves me typing a few characters. 




Goo.gl

I have found some code in a comment of a blog. The comment pointed to this URL. I have uploaded my class here GoogleUrlShortner.cs (4.17 kb) as mirror. 

The test

Here is my code for the test:

public string GetShortUrl()

{

    string shortUrl = "http://www.mydomain.com/cars/audi/Audi-R8-V12-TDI-Le-Mans";

    System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();

    sw.Start();

    shortUrl = Util.GetBitLy(shortUrl);

    sw.Stop();

    System.Diagnostics.Debug.WriteLine("bit.ly: " + sw.ElapsedTicks + " and url " + shortUrl);

    sw.Restart();

    shortUrl = shop.BLL.Utility.GoogleUrlShortner.Shorten(shortUrl);

    sw.Stop();

    System.Diagnostics.Debug.WriteLine("goo.gl: " + sw.ElapsedTicks + " and url " + shortUrl);

    shortUrl = Server.UrlEncode(shortUrl);

    return shortUrl;

}

As you've noticed, I used the Stopwatch class which is great for measuring performance of your code. 

The result

Here is the output.

bit.ly: 1988350 and url http://bit.ly/cLkqPZ 
goo.gl: 1062865 and url http://goo.gl/DrFx

Second run: 

bit.ly: 1125702 and url http://bit.ly/cLkqPZ 
goo.gl: 674658 and url http://goo.gl/DrFx

Conclusion

Bit.ly has a great benefit that you can track the clicks of a shortened URL. but when using URL shortening on a product detail page, it’s useless when you have about 3000 product detail pages.

So I’d chose to go with Goo.gl since it has a faster response time and less characters in the shortened URL’s

Update 11-jan-2011: Google URL Shortner gets API!