LinkedIn Engagement Rate by Content Format Average engagement rate across 1.3M posts, Q1 2026 2% 4% 6% 8% 10% Document posts 7.00% Polls 6.80% Images 5.30% Text posts 4.40% Video 2.50% Articles 1.90% Document posts outperform the 5.20% platform average by 27%. Data via Socialinsider 2026