Instagram · Image Sizing
Instagram Image Sizes: The Complete 2026 Guide
Published April 2026 · 7 min read
Instagram compresses every image you upload. If your image isn't the right size to begin with, the platform will resize and re-compress it — which can reduce sharpness and introduce blocky artifacts. Understanding the correct dimensions for each content type is the most important step in keeping your Instagram content looking crisp and professional.
This guide covers every Instagram format: feed posts, stories, reels, carousels, and profile pictures. For each, we explain the recommended size, the aspect ratio, and the key things to watch out for.
Why Does Instagram Compress Images?
Instagram stores images at multiple resolutions for different devices and connection speeds. When you upload an image, it is automatically resized and re-encoded in the JPEG format — even if you uploaded a PNG. This re-encoding is where quality is lost.
Uploading at the recommended pixel dimensions means Instagram won't need to scale your image before re-encoding it, which minimizes the quality degradation. It won't eliminate compression, but it will keep your images significantly sharper than uploading at the wrong size.
Instagram Feed Post Sizes
Feed posts appear in your grid and in followers' home feeds. Instagram supports three aspect ratios for feed posts:
Square Post
1080 × 1080 px · Aspect ratio 1:1
The classic Instagram format. Works well for most content and appears consistently across all grid layouts.
Portrait Post (Recommended)
1080 × 1350 px · Aspect ratio 4:5
Takes up significantly more vertical space in the feed, giving your content more visibility before users scroll. Generally results in higher engagement.
Landscape Post
1080 × 566 px · Aspect ratio 1.91:1
Used for wide, panoramic images. Takes up less feed space than square or portrait formats.
Which should you choose? For most creators and brands, the portrait format (4:5) is the best choice for regular feed posts. It naturally takes up more screen space than a square, so users spend more time looking at your content before scrolling. Landscape is useful for specific types of images like architecture or landscapes where the horizontal framing is essential.
Instagram Stories Size
Stories appear full-screen in a vertical format and disappear after 24 hours unless saved to Highlights. They are one of the most engaged-with content formats on the platform.
Instagram Story
1080 × 1920 px · Aspect ratio 9:16
Note: Instagram's UI elements (username, reactions, "Send message" bar) cover the top ~14% and bottom ~20% of the frame. Keep important content — text, faces, key visuals — in the middle 66% of the frame to avoid it being obscured.
Instagram Reels Size
Reels are Instagram's short-form video format, but the same dimensions apply to thumbnail images and any static image reels. Reels are displayed in a dedicated tab, in the home feed, and in the Explore page.
Instagram Reels
1080 × 1920 px · Aspect ratio 9:16
Reels are displayed at 9:16 in full-screen mode but are cropped to approximately 4:5 in the home feed. Design your key content to look good in both formats by centering the most important elements.
Instagram Carousel Posts
Carousel posts allow you to share multiple images or videos in a single post that users can swipe through. They tend to generate more engagement than single-image posts because they encourage interaction.
Carousel Slides
Same dimensions as regular feed posts apply to each slide
Important: All slides in a carousel must use the same aspect ratio. The first slide sets the ratio for the entire carousel. Mixing orientations is not supported.
Instagram Profile Picture Size
Your profile picture is displayed in a circle on your profile page and next to your username in stories and comments. Instagram displays it at a small size, but storing a larger image means it will look sharp on high-resolution screens.
Profile Picture
Upload at least 320 × 320 px · Displayed at 110 × 110 px
Use a square image. The circular crop is applied by Instagram — you cannot control exactly how it crops, so make sure your subject is centered with some padding around it.
Quick Reference: All Instagram Sizes
| Format | Dimensions | Ratio |
|---|---|---|
| Square Post | 1080 × 1080 | 1:1 |
| Portrait Post | 1080 × 1350 | 4:5 |
| Landscape Post | 1080 × 566 | 1.91:1 |
| Story | 1080 × 1920 | 9:16 |
| Reels | 1080 × 1920 | 9:16 |
| Profile Picture | 320 × 320 min | 1:1 |
File Format Tips for Instagram
Regardless of what you upload, Instagram converts and stores images as JPEGs. Here's what that means for your workflow:
- Upload as JPG at 90–100% quality for photos. Starting with a high-quality JPG gives Instagram's compression algorithm the best data to work with.
- PNG uploads are fine but will be converted to JPG by Instagram anyway. Use PNG if your image has text or graphics where lossless quality is critical before the platform converts it.
- Avoid re-saving the same JPG multiple times before uploading. Each save reduces quality. Always work from your highest-quality original.
- Use the sRGB color space for colors that display accurately. Images in other color profiles (like Adobe RGB) may look desaturated on Instagram.
How to Resize for Instagram for Free
The easiest way to resize images to Instagram's exact dimensions is to use our free Image Resizer. Upload your photo, choose the "Instagram Post" or "Instagram Story" preset, pick your output format, and download. Everything happens in your browser — no account required and nothing is uploaded to a server.