LinkedIn Post Preview

LinkedIn does not show your whole post in the feed. Long posts get truncated after roughly the first 210 characters on desktop — about three lines — with an ellipsis and a “see more” link. On mobile, where the majority of LinkedIn sessions happen, the cutoff arrives even earlier. Everything below that line is invisible until a reader actively chooses to expand.

That choice is the whole game. A reader who clicks “see more” has just done two things: they have signaled genuine interest, and they have started a dwell session on your post — time spent actively reading rather than scrolling past. Dwell time is one of the engagement behaviors LinkedIn's ranking system is known to observe. But the deeper truth is simpler: most readers never click through on a mediocre opening. Whatever is above the fold effectively is your post.

This is also why the fold number is not arbitrary in our system. Our scoring rubric's first dimension — hook strength — explicitly asks whether the opening grabs attention within 210 characters, the same number this preview uses. When the analyzer tells you your hook scores 58, and this tool shows you exactly which 210 characters it is judging, the two tools are talking about the same thing. No other preview tool and no other scorer makes that promise, because no other scorer publishes its calibration at all.

The openings that consistently earn the expand fall into recognizable patterns, and our hook generator encodes six of them: the question that creates a gap the reader needs closed; the bold statement that stakes a claim worth arguing with; the story opening that drops you mid-scene; the statistic that quantifies a problem; the contrarian take that challenges a default belief; and the relatable observation that makes someone feel seen. What they share is specificity — a number, a named stake, a concrete moment — inside the visible zone.

The most common failure is the opposite: a warm-up. “In today's fast-paced business environment” spends 50 characters saying nothing, and by the time the actual point appears, it is behind the fold talking to nobody. If your preview shows generic filler in the visible zone, cut it — the post often starts better at its second sentence.

Formatting matters here too. A bolded key phrase inside the visible zone acts as a visual anchor for skimmers deciding whether to invest attention. Keep it to one anchor — emphasis everywhere is emphasis nowhere.

The desktop feed gives a post about three lines before truncating. Mobile gives less — commonly around 140 characters, though the exact number varies with device, font size, and app version, which is why our mobile view is labeled an approximation rather than a precise constant. LinkedIn has never published an official cutoff, and any tool claiming a single exact mobile number is guessing.

The practical rule holds regardless of device: put the hook in the first line and the justification in the second. If your post only works when the reader sees 400 characters, it does not work. Test the draft in the mobile view — if the visible slice still makes someone curious, you have a hook that survives the feed.