Content Creation
Repurposing Content: Optimizing PDFs for Instagram & LinkedIn Algorithms
Don't screenshot your slides. We explain the exact pixel dimensions and aspect ratios favored by social algorithms and how to extract them from PDFs.
Creative Team
2026-02-02
5 min read
The Algorithm Loves Quality
Social platforms like Instagram and LinkedIn compress images heavily. If you upload a blurry screenshot, their compression algorithms will turn it into unintelligible noise.
The Specs
- Instagram Portrait: 4:5 Aspect Ratio (1080 x 1350 px).
- LinkedIn Carousel: PDF Document (Portrait or Square).
Why PNG over JPG?
For text-heavy slides, PNG-24 is mandatory.
- JPG: Uses "lossy" compression (Discrete Cosine Transform) which creates "artifacting" or fuzziness around high-contrast text edges.
- PNG: Uses "lossless" compression (Deflate algorithm), preserving sharp typography perfectly.
The Extraction Workflow
Using PDF to Image, we render the vector font data directly to a raster grid at 300 DPI. This provides a source file roughly 3x larger than the screen display size, giving the social media compression algorithms "plenty of data" to work with, verifying the final result looks crisp on a Retina display.
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