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There are dozens of URL shortening services available, most of which are the same in terms of features.有很多网址缩短提供服务，其中大部分是在功能上相同的几十人。 Some, like Bit.ly, differentiate themselves with stats and such, while some others do so with their size (no pun intended有些人，像Bit.ly，区分与统计等，但有些则是与他们的规模，（没有双关语意自己 
). ）。
u.nu u.nu is one such URL shortener – it has the shortest number of characters in URL possible.就是这样一个网址shortener -它的字符数最短的网址可能。 There are other services with three letter domains, but u.nu also has a convenient API etc. for use.有三个字母域其他服务，但u.nu也有一个方便的API的使用等。
Usually, API is used by services that interact with the site, but u.nu API is simple.通常，所使用的API服务，互动的网站，但u.nu的API非常简单。 To create a new short URL, all you have to do is, use the URL http://u.nu/unu-api-simple?url=<YOUR_URL> where YOUR URL is the original, longer URL.要创建一个新的短网址，所有您需要做的是，使用URL http://u.nu/unu-api-simple?url = <YOUR_URL>在您的是原来的，更长的网址。 More details about the API are available关于API的更多详情，可 here这里 . 。
You can also drag the您还可以拖动 bookmarklet书签 and place it on your bookmarks toolbar for easy access.并将其放置在您方便的书签工具栏。