There is a lot of guesswork about what works on LinkedIn. This is not guesswork.
Independent analysis of 329,504 LinkedIn posts from Q4 2025 gives us the clearest picture we have ever had of which formats actually get reach — and why.
Here is what the data says.
Document and PDF carousels — 6.60% average engagement
The highest performing format on LinkedIn by a significant margin. Multi-page PDF carousels drive saves, dwell time, and shares — three of the most powerful signals in LinkedIn's new algorithm.
Why do they work? Because flicking through a carousel takes time. That dwell time signals to LinkedIn that your content is genuinely valuable. Add a strong educational framework or data-backed insight and you have content that people save, share, and come back to.
Best for: frameworks, step-by-step guides, data breakdowns, thought leadership with visual structure.
6.60%
Average engagement for PDF carouselsThe highest performing format on LinkedIn by a significant margin — driven by saves, dwell time, and shares.
Native video — high and growing (+36% year on year)
Video on LinkedIn is growing faster than any other format. Horizontal and vertical both work. The hook in the first three seconds determines whether anyone watches at all.
The key word is native. Video uploaded directly to LinkedIn significantly outperforms video shared as a YouTube link. LinkedIn wants to keep people on the platform. Work with that, not against it.
Best for: founder stories, behind-the-scenes content, expert takes on industry news, short educational clips.
Text-only posts — around 2% engagement, but high reach potential
Text posts have lower average engagement than carousels, but they have the highest viral potential of any format when the hook is exceptional. The algorithm rewards conversational writing. Short sentences. Plain language. A strong first line.
The risk with text-only is that average text posts perform poorly. The upside is that a genuinely great text post can reach tens of thousands of people organically.
Best for: personal stories, bold opinions, lessons learned, Founder's Journey content.
Polls — 2x median performance for reach
Polls are underused. They generate easy engagement and reach because people find them quick to respond to. The trick is asking questions that surface genuine opinions rather than fishing for compliments.
Best for: market research, surfacing ICP frustrations, generating conversation around a topic you plan to go deeper on.
Single image posts — medium performance
Images still work, but they perform below documents and video in most cases. The exception is data-rich or highly visual images where the content rewards closer inspection.
Best for: quotes from your content, event highlights, milestone announcements with context.
External link posts — lowest reach
Posts with links in the body receive approximately 60% less reach from LinkedIn's algorithm. LinkedIn does not want to send people away from the platform.
The workaround: write your post without the link, then add it in the first comment. You get the engagement and reach of a link-free post while still giving your audience somewhere to go.
The writing rules that change everything
Regardless of format, these principles apply across all LinkedIn content:
Posts of 1,250–3,000 characters outperform short posts by 31%. Fourteen or more short paragraphs — dense walls of text perform 71% worse. Grade 5–7 reading level — simpler words win by 39%.
Emojis improve post performance by 220% when used purposefully. Portrait images at 1200×1500px perform 86% better than landscape.
"
The single most important element of any post is the first line. Two lines appear in the feed before the 'see more' cutoff. Those two lines determine whether anyone reads the rest.
Sources & further reading
Format-level engagement data comes from Buffer's LinkedIn benchmark dataset, year-on-year video growth is reported by Social Media Today's LinkedIn coverage, and the writing-rule heuristics align with Hootsuite's algorithm guidance.
Get a personalised audit of your current LinkedIn content strategy. Book a free Social Signal Diagnostic.