LinkedIn carousel mockups: pages people swipe, built as a PDF.

Three LinkedIn formats that get called carousels

Organic document posts, carousel ads and multi-image posts look similar in the feed but have different files, limits and ratios. Pick the format first, because it decides the page size and the export.

One detail matters for anything sensitive: LinkedIn's help center says that, for accessibility, members who can see a document post can download it as a PDF. Treat every page as public and downloadable.

Choosing a page size

LinkedIn does not publish pixel dimensions for organic document pages, and its document ad specs list only vertical, horizontal and square orientations and standard paper sizes. In practice, square and 4:5 portrait pages use the most feed height on a phone without forcing tiny text. Landscape slide decks at 16:9 work, but they appear short in a mobile feed and need larger type.

Whatever you choose, keep every page identical in size. LinkedIn's document ad specs require multi-sized pages to be fit to one page size, and mixed sizes in an organic post make the swipe jump. MockupX's Square, Portrait and HD presets cover all three shapes.

• 1080 × 1080 (1:1): simplest grid; the same pages can be reused on Instagram
• 1080 × 1350 (4:5): more room for a phone screenshot plus a headline
• 1920 × 1080 (16:9): only if the pages are also a presentation deck

From image pages to a PDF

MockupX exports images (PNG or JPEG, plus WebP on Pro); it does not export PDF. Build each page as its own export at the same canvas size, name the files in order, and combine them into one PDF with a tool you already have. On a Mac, Preview can open a set of images and save them as a single PDF; Keynote, PowerPoint and Google Slides can do the same if you place one image per slide on a slide size that matches the page ratio.

• Name files 01-cover.png, 02-problem.png and so on so they stay in order
• Use PNG for pages with screenshots and small text, JPEG for photo-heavy pages
• Open the finished PDF and page through it once before uploading
• Add a document title in the composer; LinkedIn uses it to tell people what the document is

Write pages that work in a professional feed

The cover decides whether anyone swipes. Name the reader and the outcome plainly, such as “How finance teams close the month in two days,” rather than a teaser. After the cover, give each page one idea, one screenshot or diagram, and a page marker so people know how far they are.

Keep text at least 40 px on a 1080-wide page. A page that needs pinch-zoom on a phone is a page people skip.

• Cover: reader, outcome and a glimpse of the product
• Middle pages: one step, claim or example per page
• Screenshots: cropped to the control or result being discussed
• Last page: a useful summary or checklist, then where to learn more

LinkedIn image post and single-image ad sizes

For a single announcement, an image post is usually better than a document. LinkedIn's help center sets a minimum of 552 × 276 pixels, recommends a width of 1080 pixels, allows up to 20 photos in a multi-photo post, and notes that the post layout depends on the height and orientation of the first image. For ads, LinkedIn's ads guide gives exact sizes.

Single-image ads accept JPG, PNG or GIF up to 5 MB, with a recommended 70-character headline and 150-character introductory text. The MockupX LinkedIn preset is 1200 × 627, the same 1.91:1 shape one pixel shorter than the ads guide's 1200 × 628; set a custom size if you want it exact.

A product launch sequence for LinkedIn

A launch document on LinkedIn usually needs four to eight pages. Use the same background, frame and headline position on every page so the change from page to page is the product.

Templates that start on LinkedIn-friendly canvases include LinkedIn Product (frameless screenshot on the 1200 × 627 preset), Chrome Coral (Chrome frame on the same preset) and Square Device for 1:1 pages.

• Page 1: the outcome and the strongest screen
• Page 2: what was slow or painful before
• Pages 3 to 5: how the workflow changes, one screen each
• Page 6: who it is for, and where to find it

Keep the post and the mockup honest

There is no need to mock up a LinkedIn profile, reactions or comments around the pages. Fake engagement in a preview tends to end up in a deck or a case study where it reads as real. Design the pages themselves, and use LinkedIn's composer preview to see how they will look in the feed.

• Replace real customer names, revenue and emails in screenshots with sample data
• Label concepts that are not shipped yet
• Do not add invented testimonials or logos