Instagram image sizes
Instagram supports three main shapes. The square is the safe default, but for product marketing the portrait 4:5 format usually wins because it occupies more of the mobile screen and slows the scroll.
| Placement | Size | Aspect ratio |
|---|---|---|
| Feed post (square) | 1,080 × 1,080 px | 1:1 |
| Feed post (portrait) | 1,080 × 1,350 px | 4:5 |
| Stories / Reels | 1,080 × 1,920 px | 9:16 |
In the widget, use the size dropdown to switch between Instagram post, Instagram portrait and Stories / Reels.
How to resize your image for Instagram
- Drop your product photo onto the box above (or click to browse).
- Pick the placement you're posting to — square, portrait, or Stories.
- Keep padding on if you want the whole product visible; turn it off to fill the frame edge to edge.
- Click Resize image and download.
Feed consistency: pick one shape — square or 4:5 portrait — and stick to it across posts so your profile grid stays tidy. Mixing ratios makes the grid look uneven.
Better content, more reach
Instagram is where product photography turns into demand. Clean, well-lit shots and short before/after clips consistently outperform flat catalogue images. For the fundamentals, see product photography tips that improve conversions, and grab the exact specs for every channel in the product image size guide.
Frequently asked questions
What size is an Instagram post?
A standard feed post is 1,080 × 1,080 px (square). Portrait is 1,080 × 1,350 px (4:5), and Stories/Reels are 1,080 × 1,920 px (9:16).
What is the best size for a product post on Instagram?
1,080 × 1,350 px portrait (4:5) often performs best because it fills more of the mobile screen. The square is the safe all-round default.
Does Instagram compress my images?
Yes. Starting from a clean 1,080 px image at the correct ratio gives Instagram the least reason to degrade it, so your product stays sharp.