Why Your LinkedIn Links Are Quietly Broken, and How to Catch It Before You Post
Click through an external link on a LinkedIn post recently and land on a blank page or an error screen? It happens far more often than people realize, and the person who posted it usually has no idea, because the post itself looks completely fine.
That's the actual problem. Not that links break. Links break everywhere, on every platform. The problem is that LinkedIn's preview box gives you no signal when it happens, so a broken link can sit on your profile for months, quietly undermining every piece of content attached to it.
Why the preview lies to you
When you paste a URL into a post, LinkedIn builds a visual card: an image, a headline, a snippet of text. That card looks correct in your draft, so you assume the link behind it is correct too. Three things break that assumption, all invisibly.
The redirect wrapper. LinkedIn doesn't publish your raw URL. It rewrites it through its own shortener, an lnkd.in link that redirects to your real destination. Most of the time this is invisible plumbing. When that redirect step hiccups, your link dies, and nothing in your draft ever showed you the wrapper existed.
Mobile rendering differences. A link that opens cleanly in a desktop browser can fail inside LinkedIn's own mobile app, often over a certificate mismatch the desktop version never encounters. You tested it once, on your laptop, and moved on. A meaningful share of your audience is opening it on a phone, inside the app, where you never tested it at all.
The cached preview. LinkedIn can keep showing an old image and an old title long after the actual page has changed, moved, or gone down entirely. The card in your draft isn't necessarily reading your site right now. It might be reading a cached memory of your site from whenever LinkedIn first crawled that URL.
Put those three together and you get the actual failure mode: you rarely click your own links after publishing, the preview gives you no reason to, and the gap between what a link looks like and what it does can persist indefinitely.
The three checks, before you publish
None of this requires LinkedIn to fix anything, which is good, because there's no indication they're prioritizing it. Ten seconds of verification before you post is simply cheaper than a dead link reaching your network.
Run it through Post Inspector. LinkedIn's own free tool at linkedin.com/post-inspector forces a fresh crawl of your URL and clears whatever it had cached. Paste your link there before you paste it into a post.
Open it incognito, right after publishing. Not in the browser tab where you're already logged in and half-remembering what the page looked like last time. A fresh, logged-out window, ideally on a phone, is the closest thing to what a stranger in your network actually experiences when they click.
Write the full https:// explicitly. Leaving off the protocol is the single most common cause of a link silently mangling into something that doesn't resolve the way you intended.
It's not just a human problem anymore
Everything earlier in this series has made one argument from different angles: the AI systems now answering questions about you and citing your content only know what they can actually reach. A dead link is that same failure in miniature, and it's not limited to the human who clicks it.
When an AI system crawls your posts, your articles, or your site, and follows a link that resolves to nothing, that source simply drops out of whatever picture it's building of you. It doesn't flag the miss or ask you about it, the same way a human reader doesn't leave a comment saying your link is broken. It just quietly moves on to whichever source did resolve, and that source, not yours, shapes the answer.
This is the same mechanism as an AI crawler hitting a JavaScript-rendered page and finding nothing to read, just at a smaller scale and a faster failure rate, because links rot constantly and nobody's checking. A business with excellent, accurate content behind a broken link is functionally identical, to both a human and an AI, to a business with no content there at all.
The habit worth keeping
This is a small, boring discipline, and boring is exactly why it works, which is the theme running through this entire series. A ten-second check before you publish is the difference between a post that represents you accurately and one that quietly doesn't, for as long as nobody, human or AI, happens to click it. Accuracy isn't just what you say. It's whether everything you point people toward still says it back.