Impressions

The counting rule is what matters. If one person scrolls past your post in the morning, sees it again in the evening, and comes back a third time to read the comments, that is three impressions from one human being. Reach would count that person once. This is why impressions is the larger and more flattering number, and why it is the one people screenshot. A post with 40,000 impressions might have been seen by 12,000 people or by 30,000 — the impression count alone does not tell you which.

LinkedIn muddies this in two ways. First, its own analytics have historically labeled the headline number on a post as "impressions" while newer surfaces and exports use language like "views" or "members reached," and these are not interchangeable. Second, LinkedIn does not publicly document the exact threshold that fires an impression — how much of the post must enter the viewport, or for how long. Industry practice on most platforms is that partial on-screen rendering counts, meaning a fast scroll past can register as an impression nobody actually read.

The practical consequence: impressions measure distribution, not attention. They tell you the algorithm showed your post to feeds. They tell you nothing about whether anyone stopped. Dwell time, comment quality, and profile views are the numbers that separate a post that traveled from a post that landed, and a rising impression count with flat engagement usually means your hook is losing people in the first two lines.

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