LinkedIn carousel PDF: how to upload and schedule it

Before sharing a LinkedIn carousel, check that its document file meets LinkedIn’s published requirements. This guide then walks through the native posting steps and explains how Page scheduling and approval fit in HeyMark.

What a LinkedIn carousel is

It’s a document inside a post. You can upload one from your homepage, a Group or a LinkedIn Page. LinkedIn accepts PDF, PPT, PPTX, DOC and DOCX, and recommends converting to PDF whenever possible for the highest-quality upload. Each post takes one document, and anyone who can see the post can download it as a PDF.

LinkedIn carousel PDF specs, according to LinkedIn

This is what LinkedIn publishes in Upload and share documents on LinkedIn and its document uploads FAQ, verified on September 25, 2026:

What about pixel dimensions? LinkedIn’s Help Center doesn’t set any. The square and portrait sizes you see in other guides are third-party recommendations. What LinkedIn does require is that every page be the same size, so pick one aspect ratio and keep it from the first page to the last.

How to post a carousel on LinkedIn

On desktop, following LinkedIn’s Help Center:

1. Click Start a post at the top of your homepage.
2. Click More, then the Add a document icon.
3. Click Choose file and pick the PDF. You can also pull it from Dropbox or Google Drive.
4. Add a title to the document and click Done.
5. Write the post. Use @ to mention someone.
6. Click Post. To schedule it instead, click the clock icon first, pick a date and time, then Next and Schedule.

On a LinkedIn Page, scheduling is for super admins and content admins (LinkedIn’s help for Pages).

For the Page admin workflow, follow how to schedule a LinkedIn Page post.

LinkedIn already schedules documents: where HeyMark fits

If you post a carousel now and then on your own profile, LinkedIn’s clock icon is enough and costs nothing. LinkedIn schedules posts up to 3 months ahead, and its help lists what can’t be scheduled: events, jobs and services (for profiles), plus multiple photos, reshares and polls on Pages (for Pages). Documents aren’t on either list.

HeyMark earns its place when the carousel is part of work with more people or more networks:

• Everything on one post. The PDF, the document title, the copy and the idea live on the same post, with a status, a date and an owner. The team comments and uploads new versions right there.
• Approval before scheduling. The approval link comes on every plan, so your client, or whoever signs off on your team, reviews the document and the copy before you schedule it. On LinkedIn that matters more, because once it’s posted the document can’t be changed. How that flow works is in social media approval workflow.
• Mentions and your company page. You mention up to 50 people and companies in the text, post as the company page, and can turn off the link preview if the copy includes a link.
• The same calendar as your other networks. The carousel sits next to the week’s Reels and TikTok videos, and its metrics land in HeyMark’s analytics. If you run several brands, see HeyMark for agencies.
• What happens next. A keyword rule replies publicly to people who comment (on LinkedIn, rules don’t send DMs).

How to schedule a LinkedIn carousel in HeyMark

1. Connect LinkedIn under My accounts in your brand. The trial runs 7 days.
2. Create a post, choose LinkedIn and the Document format, and upload the PDF.
3. Add the document title and the copy with your mentions. If it’s going on the company page, pick it.
4. Share the approval link. Once it’s approved, pick the date and time and schedule it.

If you work with Claude or ChatGPT connected to HeyMark, ask for one last check before scheduling:

Use HeyMark with the brand [brand name] and open the LinkedIn draft [draft title].
Confirm it has the PDF attached and a document title, that it posts as the company page and that the mentions point to the right people and companies.
Show me the copy, the title, the mentions and the date in my time zone.
Don't schedule it until I write "approved".

What your assistant can do on LinkedIn, tool by tool, is on the LinkedIn MCP server page.

When another tool fits better

• If you post the occasional carousel on your own profile. LinkedIn is enough, and scheduling there costs nothing.
• If you still need to design the pages. Do it in your design tool: HeyMark takes the finished PDF and handles the title, the copy, the approval and the date.
• If you want something free. HeyMark has no free plan: it has a 7-day trial and then starts at $12 USD a month. We compare options that do have free plans in schedule social media posts.