New 2026 Instagram Post Size Cheat Sheet

Looking to keep your grid fresh without your graphics getting chopped up by Instagram’s constant updates? If you’ve noticed your standard square posts looking a bit squeezed lately, you’re not alone.

Instagram has rolled out big changes, natively pushing a 3:4 aspect ratio for vertical feed photos and updating profile grids to 3:4 vertical tiles instead of the classic 1:1 square. If you want your content looking sharp from Joburg to Cape Town, here is the quick breakdown to keep your branding on point.

Instagram Dimensions Cheat Sheet

New Native Feed Image

(3:4 Ratio | 1080 × 1440 px):

The gold standard for vertical photos. It fills up your followers' screens and fits perfectly into the new profile grid without weird auto-cropping.

Classic Feed Portrait 

(4:5 Ratio | 1080 × 1350 px):

Still great for maximum vertical feed real estate, but keep key elements centered so the top and bottom don't get trimmed on your grid view.

Reels & Stories

 (9:16 Ratio | 1080 × 1920 px):

 Full-screen video territory. Make sure your safe zones are clear of stickers, captions, or UI buttons.

Classic Square 

(1:1 Ratio | 1080 × 1080 px):

It’s not dead, but side-cropping will happen on the updated 3:4 profile grid layout.

3 Quick Tips to Keep Your Grid Looking Clean

Center Your Focus:

 Keep your core message, headlines, and key visual elements dead-center in the "Safe Zone" to avoid accidental cropping on profile previews.

Match Your Ratios:

Designing carousels? Stick to a single ratio throughout the deck (ideally 3:4 or 4:5) so viewers get a smooth horizontal swipe.

Own Your Visual Brand:

Consistent color palettes—like bold purples, high-contrast yellows, or sleek dark modes—make your feed immediately recognizable in a crowded feed.

Whether you're running a localized business account or scaling content across Mzansi, getting your pixel dimensions right upfront saves you hours of redesign headaches later. Save this guide for your next content batch!

Written by: Key Letsoalo | Powered by: BAXiBull.co.za | (+27)68-271-6276