The right format: 4:5 takes the most space

In the feed, whoever fills more vertical area stands out more. The best carousel format is therefore 1080 × 1350 pixels (4:5, portrait). Square (1080 × 1080) works too but takes less room. The iron rule: all slides of a carousel need the same format. Mix portrait and landscape and Instagram crops inconsistently, making the carousel look messy.

The continuous panorama effect

The most eye-catching carousel trick: a subject that continues across several slides as you swipe, as if it were a panorama. Here's how:

  1. Create a wide canvas. For three slides: 3 × 1080 = 3240 px wide, 1350 px tall. For two slides 2160 × 1350, and so on.
  2. Design it continuously. Lay out the subject, lines, and text across the full width — but don't place important elements right on the cut edges.
  3. Cut into equal-width strips. Split the wide graphic into pieces exactly 1080 px wide — with the crop tool, carefully at the edges (1080, 2160, 3240). Each strip becomes a slide.
  4. Upload in the right order — slide 1, 2, 3. On swipe, the subject runs through seamlessly.

Uniform size is mandatory

Even for individual (non-continuous) slides: all exactly the same size (1080 × 1350). The easiest way is to set up the same canvas for each slide and export consistently at the same dimensions. If you want to mix photos of different aspect ratios, crop them to the shared 4:5 first — the photo content gets cropped, but the carousel sits clean.

The first and last slide

Two slides carry special weight:

  • Slide 1 (the stopper): it decides whether anyone swipes at all. A clear statement, large text, a subject that sparks curiosity — just as a thumbnail wins the click, slide 1 wins the swipe.
  • Last slide (the close): a call to action, a summary, or a “don't forget to save.” This is where you collect the interaction the carousel built up.

Export sharp

So Instagram doesn't have to rescale (and lose sharpness): export each slide at exactly 1080 × 1350 px, as JPG at quality 85, straight from the original. Graphics with a lot of sharp text can use PNG instead. Uploading at the exact target size, from the original, is the surest way to avoid the soft-on-upload effect.

In short

  • 4:5 (1080 × 1350) takes the most feed space.
  • Same format for every slide, always.
  • Panorama effect: wide canvas, cut into 1080 px strips.
  • Export at exact target size to stay sharp.