Instagram portrait post size
1080 × 1350 px · 4:5 · post
1080 × 1350
The details
The tallest crop Instagram allows for feed photos (4:5). It occupies the most screen per post; at 1080 wide, anything taller than 1350px gets cropped down to the 4:5 limit on upload.
Source: help.instagram.com · checked 2026-07-04