Know before you click.
Yes. In fact, there are a couple of ways.
But first, let’s talk about links in email and short links (or “shortlinks”) in general.
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A Shortlink's Destination
Shortlinks, as the name implies, are shorter representations of longer URLs that are easier to type and less error-prone. Since they also hide the target URL, they can be misused. Popular services like bit.ly and tinyurl.com have features allowing you to examine a shortlink’s destination without the need to click. There are also services link GetLinkInfo.com that will show you the target of any shortlink.
Be skeptical of links in email
This is an excellent time to remind you to be extra cautious when clicking links in email.
If the link is obviously spam, or you just don’t trust where it came from, it’s simple to assume it’s bad and get on with your life.
Sometimes it’s not obvious. Some clues about the email might be:
- Not addressing you by name.
- Having a message body that seems out of character for the person sending you the mail, such as a terse “look what I found” type of statement.
- Having no text at all, just a link.
- Having a name you recognize in the From: field, but (if displayed) a corresponding email address that is clearly wrong, or one you’ve never seen before.
URLs, or Uniform Resource Locators, are those strings beginning with http or https. They tell a web browser what website or page you want to view.
The problem with long links is they often break when they’re wrapped to fit a particular line length, window, or screen size, particularly when sent in email. And of course, they’re almost impossible to type correctly if you need to for some reason. They’re also often too long for length-limited situations like Twitter.
Enter “shortlink” services. They allow you to create short, manageable URLs redirecting to longer ones. For example:
This is a shortlink (using my own service) taking you to the longer URL listed above. It’s easier to type, easier to remember, and not prone to break in email programs and elsewhere.
There are many link shortening services; examples include TinyURL, and Bit.ly.
The problem with a short URL is it’s not obvious where it’ll take you until you click. They’re often also referred to as “cloaking links” because they hide, or cloak, the final destination.
Typically, the only way to find out where this link goes is to click on it: https://go.askleo.com/mystery. That one’s safe, but there’s no way to know for sure, perhaps until it’s too late.
If you have reason to be concerned, suspicious, or skeptical about a link it’s not unreasonable to want to know where it goes before you click.
Determining a shortlink’s destination
Some services have preview features. For example, if you visit tinyurl.com/preview.php, TinyURL will let you turn on a cookie-based feature in your browser. With this feature on every time you click on a TinyURL link you will be shown where it goes prior to going there.
Bit.ly includes something similar. Simply add a plus sign to the end of the URL, and Bit.ly will display where you would have gone rather than taking you there. If you’re given the shortlink https://bit.ly/37mYMI4 then add a plus sign and go to https://bit.ly/37mYMI4+ for all sorts of information about the link.1
There are also sites to show you where any shortened link will take you. One current2 example is GetLinkInfo.com. If you enter https://go.askleo.com/mystery into GetLinkInfo.com you’ll see the eventual target URL you would be taken to.
The bottom line, really, is to stay away from mysterious links sent to you through spam. But when you receive a shortened link from a trusted source and you aren’t sure why investigate with these preview tools.
Addendum: it’s more than shortening
You might notice that, for example, my link to GetLinkInfo.com actually runs through my own link shortener: https://go.askleo.com/getlinkinfo actually making it longer. Link shorteners are often used for two additional purposes:
- If the destination ever changes, I can update the shortener with the new URL. I do this often with technical and other articles I link to since some sites (looking at you, Microsoft) often change where pages are located. With a single change to the shortener, all places I’ve used the shortlink will now go to the correct, updated, URL.
- I can track how many times the link is clicked. This can be exceptionally valuable to see how much interest a particular topic might have.
When it comes to spam, however, this is yet another case of valuable technology — link shortening — being used for purposes other than what was originally intended.
Shortlinks aren’t bad, in and of themselves, but they can be abused, and thus often warrant a little extra caution.