LinkedIn Post Length Guide

LinkedIn allows 3,000 characters but shows roughly 140 on mobile and around 210 on desktop before collapsing behind "see more". That collapse is the whole game, because expanding a post is an interaction the platform measures — it signals interest and feeds distribution. A post structured so the first two lines create a genuine reason to expand performs differently from one that simply begins.

Formatting carries more weight here than on most platforms, because the feed is dense and professional. Single-sentence paragraphs with blank lines between them are the native style, and they exist for a real reason rather than as affectation: on a narrow mobile column, a conventional five-sentence paragraph is a solid block that readers scroll past. Line breaks are what make a longer post survivable.

Two platform-specific mechanics are worth knowing. Outbound links in the post body reduce reach, since the platform prefers to keep readers on it — putting the link in the first comment is the standard workaround. And dwell time counts, which is why substantial posts often outperform short ones despite the truncation: a reader who expands and then reads for thirty seconds is a stronger signal than one who scans a two-line post and moves on.