Instagram Feed Image Specifications 2025
Complete guide to Instagram feed post dimensions and image specifications for 2025. Optimize your feed posts with the perfect size and aspect ratio for maximum engagement.
Quick Specs
Dimensions & Resolution
Takes most vertical screen space, best for engagement
Supported but less optimal than 4:5
Horizontal format, limited visibility in feed
Important Notes
Instagram feed supports aspect ratios from 1.91:1 to 3:4. The recommended 4:5 ratio (1080×1350) takes maximum vertical screen space for best engagement. Profile grids now display up to 3:4 ratio (January 2025), making vertical content more prominent. Square (1:1) and landscape (1.91:1) are supported but show less content area.
Optimization Tips
- ✓Use 4:5 ratio (1080×1350px) for all new posts - best for new 3:4 grid
- ✓Avoid creating new 1:1 square posts - less optimal with grid update
- ✓Leave extra space around borders to prevent grid cropping
- ✓Carousel posts: Lock all slides to the first image's aspect ratio
- ✓Compress images to under 1MB for faster loading
- ✓Use JPEG for photos, PNG for graphics with transparency
- ✓Consider backward compatibility - some users may still see square grid
Sources & Verification
Last verified: 2025-09-28
Instagram supports 1.91:1 to 3:4 aspect ratios. Grid displays 3:4 previews as of January 2025.
compression
captions
caption Recommendations
Keep captions concise for better engagement
grid View
New taller grid format shows center 1012×1350px of 4:5 posts
carousel Updates
Expanded to 20 items in August 2024, now standard
alt Text
Alternative text for accessibility
Frequently Asked Questions
What's the best aspect ratio for Instagram feed posts?
4:5 (1080×1350px) is now strongly recommended as it takes up the most vertical screen space and aligns with Instagram's new 3:4 grid format introduced in 2025. Avoid creating new 1:1 square posts as they're less optimal for the updated grid.
What's the maximum resolution for Instagram photos?
Instagram supports images up to 1080 pixels wide. Higher resolution images will be compressed to 1080px width while maintaining the aspect ratio.
Should I use JPEG or PNG for Instagram posts?
Use JPEG for photographs as it provides better compression. Use PNG only when you need transparency or for graphics with text where quality is crucial.
Can I post panoramic images on Instagram?
Yes, you can use the 1.91:1 landscape ratio (1080×608px) for panoramic shots, though they'll appear smaller in the feed compared to square or portrait posts.
Recent Updates
Adam Mosseri announced grid preview change from 1:1 square to 3:4 tall rectangles. 4:5 posts recommended
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