Instagram Post Size: Dimensions, Safe Zones, and Export Checks
Check Instagram post dimensions for square, portrait, and landscape photos before exporting from Canva, Photoshop, Figma, or a mobile editor.
Last checked: July 8, 2026. Sources: Instagram Help: image resolution, Hootsuite: July 2026 social media image sizes. ImageSizeKit is independent and is not affiliated with Instagram.
Use square or 4:5 as your main feed presets, then check the exported ratio before publishing.
Quick answer
Use 1080 x 1080 pixels for a square Instagram post, 1080 x 1350 pixels for a 4:5 portrait post, and 1080 x 566 pixels for a 1.91:1 landscape post.
Instagram Help says uploaded photos keep their original resolution when the width is between 320 and 1080 pixels and the aspect ratio is between 1.91:1 and 4:5. If the ratio falls outside that range, Instagram crops it to a supported ratio.
For most creators and marketers, the safest production workflow is to export at 1080 pixels wide, keep the subject centered, and verify the final width, height, and ratio before publishing.
Instagram post size specs
| Field | Value | How to use it |
|---|---|---|
| Square post | 1080 x 1080 px | Best default when you need one reusable feed image or carousel slide. |
| Portrait post | 1080 x 1350 px | 4:5 vertical feed image that uses more mobile screen height. |
| Landscape post | 1080 x 566 px | 1.91:1 horizontal image for wide photos and campaign assets. |
| Supported photo ratio range | 1.91:1 to 4:5 | Instagram Help says images outside the supported ratio range are cropped to fit. |
| Recommended working width | 1080 px | A practical export width for sharp feed images without oversizing routine posts. |
Pre-upload checklist
Use this checklist after exporting the image and before publishing it to the platform or website.
- Choose square, portrait, or landscape before designing.
- Keep the focal subject centered enough to survive grid and feed previews.
- Export at 1080 pixels wide when possible.
- Avoid ratios outside 1.91:1 to 4:5 unless you want Instagram to crop.
- Use the local dimension checker on the exported file.
- Preview carousel slides as a set so mixed ratios do not feel accidental.
Common mistakes
| Mistake | Symptom | Fix |
|---|---|---|
| Wrong ratio | The image is cropped after upload. | Re-export inside the supported 1.91:1 to 4:5 range. |
| Tiny text | The design is readable in Canva but not in the feed. | Use fewer words and larger type, especially for 1080 x 566 landscape posts. |
| Mixed carousel crops | Slides jump between different shapes. | Use one consistent ratio across carousel slides unless the contrast is intentional. |
Instagram post size FAQ
What is the best Instagram post size?
Use 1080 x 1080 pixels for square posts, 1080 x 1350 pixels for 4:5 portrait posts, and 1080 x 566 pixels for 1.91:1 landscape posts.
What aspect ratios does Instagram support for photos?
Instagram Help says supported photo ratios run from 1.91:1 to 4:5. Images outside that range can be cropped to fit.
Should Instagram posts be square or portrait?
Square is the safest reusable format, while 4:5 portrait uses more vertical space in the mobile feed. Pick based on the creative and campaign goal.
Can ImageSizeKit resize my Instagram post?
This page routes you to local checks and ratio calculations. Use the dimension checker to verify the exported file before uploading to Instagram.
Related image tools
Social Media Image Sizes
Browse Instagram, Facebook, LinkedIn, Open Graph, Etsy, and Shopify image size guides.
Open ->Instagram Story Size
Prepare 1080 x 1920 vertical story artwork and safe-zone checks.
Open ->Instagram Reel Cover Size
Plan vertical Reel covers and profile grid crops.
Open ->Image Dimension Checker
Read width, height, ratio, format, and file size locally.
Open ->Sources and update history
July 8, 2026: Added after the cross-platform keyword plan identified Instagram post size, ratio, converter, and in-pixels searches as a P0 expansion opportunity.