paste a post, see exactly what survives above "…more". Desktop cuts ~3 lines / ~210 chars, mobile ~2 lines / ~140 chars.
Above the fold (current device)
LH
Lawrence Hitches
2h • 🌐
post image appears here (pushes the fold higher on mobile)
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Fold model: LinkedIn clamps at ~3 visual lines on desktop (~210-220 chars incl. line breaks) and ~2 lines on mobile (~140 chars). Every line break eats a line. The red dashed line marks the cut.