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Instagram Post Size Resizer
Resize any photo to Instagram post size: 3:4, 4:5, 1:1 or landscape for the feed, and 9:16 for Stories and Reels. Drag to choose what stays in frame, then save it as a JPG.
Drop a photo here
JPG, PNG or WebP
Your photo never leaves this browser — nothing is uploaded to our servers.
Instagram post sizes and aspect ratios at a glance
| Format | Aspect ratio | Size (px) |
|---|---|---|
| Feed portraitThe tallest feed photo — takes up the most space on screen | 3:4 | 1080×1440 |
| Feed portraitThe portrait size many scheduling tools and ads use | 4:5 | 1080×1350 |
| Feed squareSquare photos and carousels | 1:1 | 1080×1080 |
| Feed landscapeThe widest photo Instagram keeps without cropping | 1.91:1 | 1080×566 |
| Story & ReelFull-screen vertical photos and videos | 9:16 | 1080×1920 |
| Reel coverThe cover photo size Instagram recommends | 1:1.55 | 420×654 |
Based on the Instagram Help Center (checked November 2026). The Story size is the full-screen size.
FAQ
Instagram posts are 1080 px wide with an aspect ratio from 1.91:1 (landscape) to 3:4 (portrait) — 566 to 1440 px tall. Instagram crops photos outside that range and scales anything wider than 1080 px down to 1080 px.
A Reel is 9:16 at 1080×1920 px, which fills the whole screen. Reels accept aspect ratios from 1.91:1 to 9:16 at 720 px or more. For the Reel cover, Instagram recommends 420×654 px (1:1.55).
3:4 (1080×1440) is the tallest portrait photo and takes up the most space in the feed. If your scheduling tool or ad only accepts up to 4:5, use 4:5 (1080×1350). Posteady publishes 3:4 photos as they are, without cropping.
Make Stories full-screen 9:16 (1080×1920 px). Meta also recommends 9:16 to avoid cropping or blank space. For a photo in another shape, choose Fit (no crop) to keep the whole photo and fill the rest with a blurred copy or a solid color.
A carousel holds up to 20 photos and videos, and the orientation you pick (square, portrait or landscape) applies to all of them. 1080×1440 (3:4) is the tallest size Instagram keeps uncropped. Resize every photo to the same size before posting.
No. Cropping and saving happen inside your browser. Your photo is never sent to Posteady's servers or stored anywhere.
Further reading
Photo ready? Schedule your Instagram posts, reels and stories with Posteady.
See the Instagram scheduler