Monday, May 25, 2009

LongURL: Preview Shortened URLs, No Clicking Required

Last month I blogged about How to Preview Shortened URLs (TinyURL,,, and more). Just this past week, I found out about a Firefox extension that allows you to preview the full URL when you hover your cursor over a shortened URL. This is even better than manually previewing URLs because it saves a lot of time, plus it also works with services that don't give you the option to manually preview the expanded URLs (such as,,,, and tons more).
LongURL currently supports more than 180 known URL-shortening services and even some that the developer isn't aware of; the developer claims that it should support "pretty much every shortening service" because of the way it was designed.

You can get LongURL as a standard Firefox add-on or as a Greasemonkey script.

If you don't use Firefox, you can go to LongURL's site Toolsvoid Unshorten URL and paste any shortened URL to see the expanded URL.

UPDATE, 3 Aug 2023: is no longer online, and and its extension have apparently not been active developed since 2019, so I removed those links. As a general rule, I no longer recommend using browser extensions, with few exceptions. My preferred alternative short-URL expander site is Toolsvoid Unshorten URL.
UPDATE, 6 May 2013: The LongURL Firefox add-on is no longer being developed and will not work with current versions of Firefox. The best alternative I've been able to find is for Firefox and Chrome. See also my How to Preview Shortened URLs (TinyURL,,, and more) article which is updated much more frequently than this one.

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  1. I just installed this Firefox extension will see what it is like.Thanks for letting me know.

  2. Greetings, Writer:

    I wrote this article when version 1.0.1 of the LongURL add-on was out. As of when I'm writing this comment, version 2.0.0 is the current version, but it has a bug that may prevent it from working at all, at least under certain circumstances. If you have trouble with the LongURL Mobile Expander 2.0.0 add-on, please see this video tutorial I made:

    The video linked above will show you how you can install version 1.0.1 of the add-on in Firefox 3.5, even though 1.0.1 is only supposed to work with Firefox 3.0.x.

  3. LongURL 2.0.1 is now publicly available, and it fixes the known bugs from 2.0.0. As of the time of this post, it's still labeled as "experimental" by Mozilla, but I've been using it for well over a week and it's working perfectly. You can see all versions, including the latest version, here:


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