Social MediaMarch 2026 · 4 min read
Instagram Image Size Guide 2026 — All Dimensions
Exact pixel dimensions for every Instagram content type in 2026 — posts, Stories, Reels, profile pictures, carousels, and IGTV covers.
Instagram Dimension Quick Reference
| Content Type | Ratio | Dimensions | Max File Size |
|---|---|---|---|
| Square Post | 1:1 | 1080×1080 | Under 1MB |
| Portrait Post | 4:5 | 1080×1350 | Under 1MB |
| Landscape Post | 1.91:1 | 1080×566 | Under 1MB |
| Story / Reel | 9:16 | 1080×1920 | Under 30MB (video) |
| Profile Picture | 1:1 | 400×400 min | Under 5MB |
| Carousel | 1:1 or 4:5 | 1080×1080 or 1080×1350 | Under 1MB each |
| IGTV Cover | 1:1.55 | 420×654 | Under 1MB |
Ad Slot — Section (Google AdSense)728×90 Banner
Why Instagram Compresses Your Photos
Instagram automatically compresses photos when: (1) the file is above 1MB, (2) dimensions are not exactly at a supported ratio, or (3) the colour profile is not sRGB. Visible symptoms: pixelation, washed out colours, artificial texture in dark areas.
Fix: resize to exact dimensions, use JPEG format at 85% quality, keep under 1MB.
Resize Tools for Instagram
FAQ
Common questions about using this tool — answered.
For square posts: 1080×1080 pixels. For portrait (best engagement): 1080×1350 pixels. For landscape: 1080×566 pixels. Keep file size under 1MB to avoid Instagram re-compression.