Instagram Image Size Guide 2026: Every Dimension You Need
UPDATED AUGUST 2026 · 5 MIN READ
Instagram Image Size Guide 2026: Every Dimension You Need
Posting the wrong image size on Instagram leads to automatic cropping, blurriness, and wasted effort. Here's the complete reference for every Instagram format in 2026 — with exact pixel dimensions and aspect ratios.
Feed Posts
Instagram feed posts support three aspect ratios. The 4:5 portrait format takes up the most screen space on mobile, which is why it generates the highest engagement.
| Post Type | Aspect Ratio | Dimensions | Best For |
|---|---|---|---|
| Portrait | 4:5 | 1080 × 1350 px | Maximum feed visibility |
| Square | 1:1 | 1080 × 1080 px | Clean grid alignment |
| Landscape | 1.91:1 | 1080 × 566 px | Wide panoramas |
Stories and Reels
Both Stories and Reels use the same vertical 9:16 aspect ratio. The key difference is content type: Stories are photos and short clips; Reels are video-first.
| Format | Aspect Ratio | Dimensions | Max Length |
|---|---|---|---|
| Story | 9:16 | 1080 × 1920 px | 60 seconds per clip |
| Reel | 9:16 | 1080 × 1920 px | 90 seconds |
| Reel Cover | 9:16 | 1080 × 1920 px | Static thumbnail |
Profile and Miscellaneous
| Element | Dimensions | Notes |
|---|---|---|
| Profile Photo | 320 × 320 px | Displayed as a circle — keep content centered |
| Thumbnail (Feed) | 1080 × 1080 px | Square crop in grid view |
| Carousel | 1080 × 1350 px | Up to 10 slides per post |
File Format and Quality Tips
- Use JPEG for photos: Instagram recompresses all uploads anyway — JPEG gives the cleanest results after recompression
- Avoid PNG for photos: PNG files are larger and Instagram will convert them, often introducing artifacts
- Maximum file size: 30 MB for photos, 4 GB for videos
- Color profile: Use sRGB for consistent colors across devices
- Resolution: Always upload at exactly 1080px wide — Instagram downscales anything larger
Why Exact Dimensions Matter
When you upload an image that doesn't match Instagram's expected ratios, the platform applies automatic cropping and compression. This means:
- Important parts of your photo get cut off
- Instagram applies extra compression, making the image blurrier
- Your content looks unprofessional compared to properly formatted posts
By pre-formatting your images to the exact dimensions above, you maintain full control over how your content appears.
Resize Your Photos Now
Use our free Instagram resizer to format any photo to the exact dimensions above — no cropping, no uploads, 100% private.
Related Guides
- How to Create Stunning Instagram Grid Banners — Split photos into eye-catching grids
- Instagram Story vs Reel: Dimensions & Best Practices — Optimize for each vertical format