URL SHORTENING: MEANING AND EXAMPLES

URL shortening is a technique on the World Wide Web in which a Uniform Resource Locator(URL) may be made substantially shorter in length and still redirect to the required page. This is achieved by using a redirecton to a domain name that is short, which links to the webpage that has a long URL.

URL SHORTENING SERVICE

URL shortening service is giving a short URL for a long URL. When a shorten URL is clicked, the destination of the link is a long URL. This service differ from one to other service providers, based on

  • Length of the shortened URL
  • Shortening link management
  • Redirection [301(permanet redirection), 302, 307(temporarly redirection)]
  • Time of link expirtation

Every long URL have a unique key when shortened. A unique key is found after http://top-level domainname/
for example: http://goo.gl/KDvsor
*- goo.gl – top-level domain name
*- KDvsor – Unique key

URL shorten

PURPOSE

Their are several reasons to use URL shortening service; some include the following:

  1. URls are difficult to memorize or type-out.
  2. Like Twitter and Instant messaging services have a limited number of characters a message can carry.
  3. URL shortening sites provide a detailed information how much click a link receive.

SOME URL SHORTENING SITES

Their are many sites offering free URL shortening, some are shortening only links posted on their site or links of theirs; examples:
http://t.co : Twitter
http://fb.me : Facebook
http://link.in : LinkedIn
http://db.tt : Dropbox
– and others

URL shortening services providers

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Credit: ethio-pic.tk

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