LinkedIn Document Posts: The Complete Guide (2026)

"Carousel", "slideshow", "document post" - on LinkedIn they're all the same thing: a PDF you upload that the feed turns into a swipeable card. The name matters because LinkedIn's own interface calls it a document, and knowing that clears up most of the confusion about how these posts actually work. This guide covers what a document post is, why it performs, and exactly how to make and publish one.

What a LinkedIn document post actually is

It's not a special post type with its own designer. Under the hood it's a plain PDF. LinkedIn takes each page of that PDF and renders it as one swipeable slide, adds the left/right arrows, and shows a page counter. That's the whole mechanism - which is good news, because it means any tool that can export a clean multi-page PDF can make a LinkedIn carousel.

Why document posts work in the feed

Two reasons. First, dwell time: a carousel asks for a swipe, and every swipe is a few more seconds spent on your post - a signal LinkedIn's feed rewards. Second, they're saveable and screenshot-able: a good multi-slide breakdown is the kind of thing people save to come back to, and saves are a strong engagement signal. A single-image post can't ask for either.

Document post vs image carousel

You may have seen "carousels" made of multiple images instead of a PDF. On LinkedIn, the document (PDF) format is the one to use: it keeps your slides in order, renders as one tidy card with a page counter, and is what the platform's own carousel behavior is built around. Multiple separate images are clumsier to post and don't get the same swipeable treatment.

How to make one, start to finish

Write your carousel as text - one idea per slide, a strong cover line first. Design isn't the hard part if you use a tool that applies a theme for you: you pick a look and it sizes the type, spacing and swipe cue across every slide. Then export the whole thing as a single PDF. In Reathy that's one click - "Download PDF (whole carousel)" - and it's free with no signup to try.

The specs that matter

Portrait at 1080x1350 (a 4:5 ratio) gives you the most feed height and is the safest default; square (1080x1080) also works. Keep it to a sensible number of pages - most strong carousels run 6 to 12 slides. For the full breakdown of sizes, aspect ratios, page limits and organic-vs-ads specs, see the size and specs guide.

How to publish it on LinkedIn

Start a new post, click the document icon (or "Add a document" under the more menu), upload your PDF, and give the document a short title - that title shows under the carousel, so make it a mini-hook, not "Untitled." Then write your caption: the first two lines are all most people see before "...more", so open with tension, not a greeting. Publish and, ideally, reply to your own first comment with a link if you want to point people somewhere.

Best practices that lift a document post

• →Earn the first swipe: the cover is the whole ad for the carousel - lead with a specific promise.
• →One idea per slide - the swipe is free, cramming is what costs you.
• →Put the payoff in reach: don't save everything for slide 12; deliver value early so people keep going.
• →End with a clear CTA slide - follow, comment, or try the thing.
• →Write the caption hook for the two-line preview, and keep the document title punchy.

Make your document post in minutes

Reathy turns plain text into a themed, ready-to-upload PDF document post - no design tools, no account needed to try. Write your slides, pick a theme, add your own photos if you want, and export the PDF. Then upload it to LinkedIn as a document and publish.