LinkedIn PDF carousel size: dimensions, ratios, and limits

As of 2026, the ideal LinkedIn PDF carousel size is 1080 x 1350 pixels (4:5 portrait aspect ratio) or 1080 x 1080 pixels (1:1 square). Built for marketers, creators, agency teams, and SaaS brands, LinkedIn accepts documents up to 100 megabytes and 300 pages. Keeping carousels between 5 and 12 pages under 10 megabytes ensures fast loading and high engagement.

Key takeaways

The 1080 x 1350 pixel format (4:5 ratio) provides roughly 25 percent more vertical mobile screen real estate than standard 1:1 squares.
LinkedIn sets hard document limits at 100 megabytes and 300 pages, but organic reader retention drops significantly past 12 to 15 slides.
Exporting vector text at 150 to 300 DPI preserves crisp typography on high-density mobile screens without inflating document file size.
Maintain an 80-pixel safety margin from canvas borders to prevent native LinkedIn reader controls from obscuring your copy.

Exact LinkedIn PDF carousel size specifications

Set your canvas size before you design to keep your text sharp and avoid odd black bars. In 2026, the standard LinkedIn PDF carousel size is 1080 x 1350 pixels for portrait cards and 1080 x 1080 pixels for square cards.

Both formats scale well across phones and desktop screens. Low resolutions like 720 x 900 pixels make text look blurry. Files larger than 2160 x 2700 pixels waste data and load slowly on phones without adding extra sharpness.

Specification	Portrait (recommended)	Square	Landscape (not recommended)
Pixel dimensions	1080 x 1350 px	1080 x 1080 px	1920 x 1080 px
Aspect ratio	4:5	1:1	16:9
Target resolution	150 to 300 DPI	150 to 300 DPI	150 to 300 DPI
Color space	sRGB	sRGB	sRGB
Primary platform	Mobile app feed	Desktop and mobile	Desktop presentations
Feed footprint	Maximum vertical height	Balanced feed square	Compact horizontal band

If you build posts for multiple networks, match these dimensions with our guide on carousel images size. This keeps your visual layout clean across channels.

Always set your design files to the sRGB color profile. If you export a PDF with CMYK print colors, LinkedIn will convert them during upload. That automatic shift often turns bright brand colors dull and muddy.

Should you design LinkedIn PDF carousels in portrait or square orientation?

Design your carousels in a 4:5 portrait format (1080 x 1350 pixels) because it claims 25 percent more vertical screen space on phones than a 1:1 square. Most mobile users scroll fast. A tall card fills the entire phone screen, hides other posts, and holds user attention.

Square carousels (1080 x 1080 pixels) work well for charts, wide data tables, and desktop audiences. Many B2B buyers browse LinkedIn on laptop screens during work hours. On wide displays, square slides fit neatly without forcing readers to scroll down.

Avoid landscape carousels (16:9 or 1920 x 1080 pixels) for standard feed posts. On a mobile phone, a wide slide covers less than a third of the screen. The empty space lets users see other posts and keep scrolling. For visual side-by-side tests, see our LinkedIn Carousel Size Guide.

To pick the right format:

Use 4:5 portrait for frameworks, step-by-step tips, and bold text.
Use 1:1 square to repurpose square graphics or reach desktop users.
Skip 16:9 landscape unless you want readers to view slides in full-screen mode.

What are the file size, page limits, and technical constraints for LinkedIn PDFs?

Under official LinkedIn upload specifications, the platform allows files up to 100 megabytes and 300 pages per document post as of 2026. LinkedIn accepts PDF, DOC, DOCX, PPT, and PPTX formats. Exporting as a PDF remains the best choice to lock in your fonts, shapes, and layout.

LinkedIn Document Constraints:
├── Maximum File Size: 100 MB (Target: Under 10 MB)
├── Absolute Page Limit: 300 Pages (Optimal: 5 to 12 Pages)
├── Supported File Types: .pdf, .ppt, .pptx, .doc, .docx (PDF recommended)
└── Rendering Engine: Rasterized slide preview generator

LinkedIn allows 300 pages, but long decks struggle in the feed. Reader swipe rates drop off quickly after slide eight. A deck with 5 to 12 slides gives you room to share valuable ideas while keeping readers swiping to the end.

Large files create delay before anyone sees your work. When a mobile user hits a 60-megabyte PDF, the app shows a blank loading box. Most users scroll away before the first page loads. Keep your file under 10 megabytes. You can learn more in our guide on how to create and publish a high-performing LinkedIn document post.

Slide count guides reader engagement:

1 to 4 slides: Best as simple image posts; too short for a carousel story.
5 to 10 slides: The sweet spot for quick guides, tips, and summaries.
11 to 20 slides: Good for case studies, but drop-off climbs after slide 12.
21+ slides: High drop-off; best for long reports meant for download.

How to export and compress PDF carousels without quality loss

To export a clean PDF, keep your text as vectors and compress images between 150 and 300 DPI. LinkedIn turns each PDF page into an image preview on upload. If your design tool flattens text into low-resolution pixels, your words will look fuzzy on modern phone screens.

Exporting from Figma

Figma saves text as vector data by default. To keep text crisp, do not flatten your frames into images before export.

Set your frame size to 1080 x 1350 pixels.
Set images inside the frame to Fill and keep them under 2000 pixels wide.
Place all carousel slides in order from left to right.
Select all frames, open the File menu, and click "Export frames to PDF".

Figma embeds fonts directly into your file. This keeps text sharp and holds file sizes under 3 megabytes for a 10-slide deck.

Exporting from Canva

Canva gives you two PDF export choices: "PDF Standard" and "PDF Print".

PDF Standard exports at 96 DPI, which lowers file size but can blur small text on phones. PDF Print exports at 300 DPI and keeps vector lines sharp. To export from Canva:

Create a custom project at 1080 x 1350 pixels.
Build your slide sequence across pages.
Click "Share", then select "Download".
Choose "PDF Print" from the file type menu.
Leave "Flatten PDF" unchecked to keep vector lines.
Leave "Crop marks and bleed" unchecked to avoid white edges.

If the file exceeds 15 megabytes, compress it with a separate tool without changing vector quality.

Optimizing with Adobe Acrobat

If high-resolution photos push your file over 20 megabytes, use Adobe Acrobat to shrink image sizes without hurting text.

Open your PDF in Adobe Acrobat. Go to "Tools", choose "Optimize PDF", and click "Advanced Optimization". Set color image downsampling to "Bicubic Downsampling to 150 pixels per inch for images above 225 pixels per inch". Select "JPEG" compression with "High" quality.

Check that all embedded fonts stay in place. This shrinks large photo layers while keeping words sharp and easy to read.

For quick checks, Carouselpost provides free browser tools including an image splitter, size checker, and PDF converter. These tools let you test your slides against LinkedIn rules before you publish.

Safe zones and mobile UI overlay considerations

LinkedIn places interface icons directly over your document slides. These controls include the title bar, page counter, and full-screen button at the top, plus the progress bar at the bottom.

If you place text or logos near the outer edges, the LinkedIn interface will block them. You need to keep key content inside a clear safe zone.

+---------------------------------------------------+  0 px
| [LinkedIn Document Title]                [1/8] [x]|  Top Overlay Zone
|===================================================|  80 px Safe Margin
|                                                   |
|                                                   |
|                 ACTIVE CONTENT AREA               |
|                                                   |
|             (Keep critical text, logos,           |
|              and callouts inside here)            |
|                                                   |
|                                                   |
|===================================================|  1270 px Safe Margin
| [==== Progress Scroller Bar ====]                 |  Bottom Overlay Zone
+---------------------------------------------------+  1350 px

Follow these spacing rules:

Top safe zone: Leave at least 80 pixels of space at the top. The document title and page count sit here. If you place text too high, the counter will cover your headline.
Bottom safe zone: Leave at least 80 pixels of space at the bottom. On phones, the progress bar and swipe prompt sit across this area.
Side margins: Keep text at least 60 pixels away from both side edges. On desktop screens, side arrows appear for navigation and can block words placed near the edge.

Read our guide on what is a carousel post to see safe-zone layouts for guides and story posts.

Step-by-step checklist to upload a LinkedIn PDF carousel

You must upload native PDF carousels through the desktop LinkedIn site. The mobile app lets you read and swipe through documents, but you cannot upload multi-page PDFs from your phone.

1. Pre-flight file check

Make sure your canvas is 1080 x 1350 pixels (or 1080 x 1080 pixels) and the file is under 10 megabytes. Verify that your export is a single multi-page PDF rather than loose images. If you need template ideas, review how to choose and use a linkedin carousel generator.

2. Open the desktop post composer

3. Select the document button

Click the document icon along the bottom row. It looks like a small sheet of paper. Do not click the photo icon, which only uploads static single images that do not swipe as a document.

Post Composer Toolbar:
[Photo Icon]  [Video Icon]  [Document Icon (Click Here)]  [Event Icon]

4. Upload your PDF file

Click "Choose file" and pick your PDF from your computer. You can also drag the file right into your browser.

5. Add a descriptive document title

LinkedIn asks for a document title. This title shows up in the top left corner of the feed viewer, and search engines index it. Write a clear title under 50 characters so phones do not cut it short.

6. Write your post caption

Add context in your post text. Share the main lesson, explain who should read it, and ask readers to swipe through the slides.

7. Preview the slide deck

Click through the slide arrows to check the page order. Make sure no text hits the safe zones and that colors look right. When ready, click "Post".

Applying your carousel specifications

Using a 1080 x 1350 pixel canvas, keeping file sizes under 10 megabytes, and leaving an 80-pixel safe margin keeps your slides readable on any screen. Open your design app, set up your artboards to these specs, and export your PDF with vector text before you schedule your post.

FAQ

What is the best pixel dimension for a LinkedIn PDF carousel?

The best pixel dimension is 1080 x 1350 pixels, which forms a 4:5 vertical portrait aspect ratio. This layout captures roughly 25 percent more vertical screen space in the mobile app feed than a standard 1:1 square. You can also use 1080 x 1080 pixels if you prefer square cards.

Can you upload a multi-page PDF on LinkedIn from mobile?

No, LinkedIn does not let you upload multi-page PDF documents through its mobile app as of 2026. You must upload document carousels from a desktop web browser. Once you publish from desktop, mobile users can view, swipe, and download the document normally in their feed.

Does LinkedIn compress PDF files when uploaded?

Yes, LinkedIn converts every page of your PDF into cached slide images to ensure fast rendering in user feeds. To prevent your slides from looking blurry, export your designs using vector-based typography and set embedded raster graphics to at least 150 to 300 DPI before uploading.

What is the maximum file size for a LinkedIn document post?

As of 2026, LinkedIn sets an absolute limit of 100 megabytes per document upload. While the platform allows files this large, you should compress your PDFs to under 10 megabytes. Heavy files load slowly on mobile networks, which causes impatient readers to skip past your post.

How many pages should a LinkedIn PDF carousel have for best reach?

The ideal length for a LinkedIn carousel is between 5 and 12 pages. This range gives you enough space to teach a concept while keeping swipe completion rates high. Reader retention drops fast when decks pass 15 slides, so save longer decks for in-depth whitepapers.

LinkedIn PDF carousel size: dimensions, ratios, and export specs