What Is a URL Shortener and How Does a Short Link Redirect to the Original URL?

Updated

A URL shortener replaces a long web address with a short domain plus a short code, and that short link redirects a visitor's browser to the original long URL. On AI6, for example, a long address ending in a query string can become something like https://ai6.net/shorty. Use a shortener when you need a link that is easy to remember, type, or share in SMS, social posts, or marketing campaigns. Skip it if you need the link to do anything other than redirect directly to a landing page.

The core process: long URL in, short link out

The mechanism has three parts:

  1. The long URL is the full address of the target page, including the domain, folders, and any query string after the question mark. Query strings can be very long—64 characters or more is common.
  2. The short code is a domain string generated from that long URL. It is the compact identifier that stands in for the full address.
  3. The redirect is what happens on click: the browser requests the short link, the shortener looks up the matching original URL, and the browser is sent on to that page.

AI6's page describes this directly: a shortened URL "will direct a web browser to the original long URL by a process called URL redirection." The short link itself contains no copy of the destination page—it is only a pointer.

A concrete example

Take a long address like:

https://www.exampleofalonglink.com/superlongexampleofalink.html/?still=going&no_not_finished=just_yet&so_on

Paste the full link into the shortener's form box and click the shorten button. The result is a compact link such as https://ai6.net/shorty. Anyone who clicks it lands on the original page, query string included.

What you need to get a working short link

  • The full, correct URL. AI6 warns that you must put the complete and correct link to the target page in the box, otherwise you get an error. A truncated or mistyped address produces a broken redirect.
  • A selected link domain. The domain defaults to ai6.net if you do not choose another.
  • A destination that is a landing page. The shortener is built for direct redirection. If your goal is something other than sending visitors straight to a page, it will not suit your purposes.

Conditions that come with a free shortener

Free tools usually attach rules and limits, and AI6 states its own plainly:

Condition What it means in practice
Links run through the shortener's domain Your short link shows ai6.net, not your own brand
Family-friendly content only Adult sites are excluded; violating links are removed by the site's "Defender"
No redirection sites You cannot chain one shortener through another
30-day no-hit limit A link with no clicks over that window is subject to the limit
Free, registered tier The free version is described as free forever, with a fuller paid version listed as "coming soon"

The page also notes a QR code feature and beta statistics for shrunken links, so you can generate a scannable code and see some performance data rather than only the bare link.

Where short links earn their keep

Short links matter most where character count or readability is tight:

  • SMS messages, where a long query string eats the message and looks suspicious.
  • Social posts on Facebook, Twitter, and similar platforms, where a clean link is easier to scan and share.
  • Marketing campaigns, where a compact link is simpler to repeat in print, on air, or in a chat.

The trade-off is that the short link hides the destination. Recipients see ai6.net/... rather than your domain, which can reduce trust—so reserve shorteners for contexts where the audience already expects a compact link, and use a branded short domain when the destination's identity needs to be visible.

Quick check before you shorten

Confirm the long URL opens the right page on its own, paste the complete address, and pick your domain. Then test the generated short link once yourself: if it lands on the intended page, the redirect is working and the link is ready to share.