LinkedIn's professional audience has higher visual quality expectations than any other social platform. Four messy individual uploads look amateur. The same four photos in a clean 2×2 grid with equal spacing look like deliberate professional content.

Top-performing formats: (1) Event recap (2×2): arrival → keynote → networking → team photo, (2) Case study (Strip of 3 or 2×2): problem → solution → result, (3) Team spotlight (2×2): 4 members with name + role, (4) Project portfolio (2×3): 6 deliverables showing breadth and depth.

Use consistent 2px neutral grey borders. Add company logo bottom-right at 30% opacity. Export 1200×1200px for feed, 1200px for article headers.