What's the best slideshow format for Instagram?
Use 9:16 (vertical) for Instagram Reels to fill the full screen, or 1:1 (square) for Instagram feed posts. Aim for under 60 seconds for Reels.
How long should each slide be?
2–4 seconds per slide works well for most content. Faster pacing (1–2 seconds) works for energetic, music-driven slideshows.