Short answer: A short link is a redirect: it sends the browser on to the long address you gave it. If that long address had no tags, or a redirect along the way rebuilds the address without them, the tags are lost. Shorten the fully tagged link, then open the short link and check the final address.
What is a short link?
Short link: a brief address, such as one from a link shortener or your own branded domain, that redirects to a longer address when someone opens it.
Redirect: the server's way of saying "go here instead". The browser then loads the new address. Anything not included in the new address is gone.
Short links are useful in bios, print, SMS and anywhere a long tagged link looks messy. The risk is that nobody can see what they point to without opening them.
Why do short links lose UTM tags?
Most often because the tags were never in the address that was shortened. Less often, a second redirect, such as http to https or a regional page, drops the query string on the way.
- Shortened too early: someone shortened the plain page address, then shared the short link expecting it to carry tags.
- Tags added to the short link:
bit.ly/abc?utm_source=xonly works if the shortener passes extra tags through, which you'd need to check. - Chains of redirects: the short link goes to
http, which goes tohttps, which goes to a country page. Each hop must keep the tags.
Platforms warn about redirects too. Google says the gclid must be passed through to the final landing page, and X is reported to advise against redirects because they can strip its click ID.
Example
A short link that points at an untagged page:
https://bit.ly/oct-offer → https://example.com/offer
The fix is to shorten the tagged address instead:
https://bit.ly/oct-offer → https://example.com/offer?utm_source=instagram&utm_medium=social&utm_campaign=oct_offer
How to fix it
- Build the full tagged link first in the UTM builder.
- Paste the full link into the link checker and fix anything it flags.
- Shorten that full link, not the plain page address.
- Open the short link in a browser, wait for the page to load and copy the address from the address bar.
- Paste that final address into the checker. If the tags have gone, a redirect is dropping them. See http instead of https for one common cause.
- Use a separate short link for each place you share it, so each one can carry its own
utm_source.
What about short links for apps?
A plain shortener can only send everyone to one address. For app campaigns that should open the app or the right store, deep linking tools such as Linkrunner, Branch or Airbridge create branded short links for that job. Whichever tool you use, run the same final-address check. See one link for both stores.