What is the file size limit for a LinkedIn carousel?

The 100MB limit exists mostly as a guardrail against unusually large files, not as a number carousel creators need to plan around. A typical carousel is a handful of flat, mostly-text design slides, and those compress to a few hundred kilobytes per page in a properly exported PDF — the whole deck usually finishes well under 10MB even at 10-12 slides.

Where file size actually becomes a problem is when slides include high-resolution photos, dense gradients, or elements exported at unnecessarily high DPI. Those inflate the PDF, and LinkedIn compresses every uploaded document regardless of its size to keep the platform fast — so a bloated file just means LinkedIn's compression algorithm has to work harder on it, which is where visible quality loss creeps in: slightly blurred text edges, banding in gradients, softened photo detail.

A common mistake that inflates file size unnecessarily is exporting each slide as a separate high-resolution PNG or JPEG and merging them into a PDF with a converter afterward, rather than exporting directly from the design file. That workflow often preserves every image at its original uncompressed resolution instead of the display resolution the carousel actually needs, and leftover hidden layers or unused design elements can silently ride along and add weight nobody notices until the file is oddly large.

The practical guidance is to export each slide at a reasonable resolution (1080px wide is plenty) rather than maxing out DPI settings, and to flatten complex layered designs before exporting. That keeps the file small enough that LinkedIn's compression barely touches it, so what you upload is close to what readers actually see. CarouseLabs exports carousels as an already-optimized PDF sized well under LinkedIn's limit, so file weight isn't something you need to manage by hand.

Key Points

• LinkedIn's document upload limit is 100MB — far more than a typical carousel PDF needs
• A well-exported 10-slide carousel usually lands under 10MB
• Heavy, high-resolution images (not slide count) are the main driver of bloated file size
• Smaller, well-compressed files hold up better against LinkedIn's own automatic compression on upload

Example

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