Instagram post size guide: Best dimensions for 2025

Instagram is all about visuals. Whether you are sharing a stunning holiday snap, promoting your brand, or showcasing a product, the right image size makes all the difference. As a part of new Instagram feature updates, Instagram has rolled out a new dimension for post size and more.
This guide will walk you through the best dimensions for your Instagram posts, stories, reels, and profile pictures. Let’s dive in!

Not all Instagram posts are the same. Different types of content require different sizes to look their best. Here’s what you need to know:

Size: 1080 x 1350 px (4:5 Ratio)

This is the best Instagram post size for 2025. Portrait posts take up more space on mobile screens, making them more eye-catching. Carousels (multiple images in one post) should also follow this size for consistency.

Guidelines:

• Always use a 4:5 ratio.
• Check how the image looks on mobile before posting.
• Make sure the key elements are in the centre to avoid cropping issues.

Size: 1080 x 1920 px (9:16 Ratio)

Instagram Stories and Reels dominate engagement on the platform. Full-screen vertical content provides the best experience for viewers.

Guidelines:

• Always use a 9:16 ratio.
• If your video doesn’t match this size, Instagram may crop it.
• The best cover photo for a Reel is 420 x 654 px.

For more details, check out our complete guide on Instagram Reel guidelines

Size: 1015 x 1350 px (3:4 Ratio)

Instagram has updated how posts appear in the grid preview. However, it’s crucial not to create content in this size directly. Always upload using the 1080 x 1350 px size to avoid unwanted cropping.

Guidelines:

• Keep text or key visuals centred.
• Do not upload in 1015 x 1350 px directly—stick to 4:5 format.
• Make sure your grid looks cohesive for a professional profile.

Size: 320 x 320 px (1:1 Ratio)

Your profile picture is small, but it’s one of the most important elements on your page. It appears next to every post and comment you make.

Guidelines:

• The display size is 110 x 110 px on mobile and 180 x 180 px on desktop, but uploading at 320 x 320 px ensures clarity.
• Profile pictures are cropped into a circle, so keep important details in the centre.

Recommended Aspect Ratio: 4:5 (Vertical)

Video content is growing rapidly on Instagram. Whether it’s a feed post, Reel, or ad, following the right dimensions ensures better engagement.

Size: 1080 x 1350 px (Portrait)

• Can be animated or static.
• Keep a consistent theme for carousel posts.

Size: 1080 x 1920 px (Stories and Reels)

Instagram ads should follow the same size guidelines as Stories and Reels to ensure they look natural in the feed.

Instagram is constantly evolving, and in 2025, it introduced an updated grid layout. The new 4:5 orientation allows users to showcase portrait images in their profile at 1080 x 1350 pixels, rather than the previous square format.
This change is especially useful for businesses and creators who want a more engaging and professional-looking profile.

Getting your Instagram post size right is essential for better engagement. A well-sized post will look professional, attract more attention, and prevent Instagram from automatically cropping important parts of your image or video.
If you’re running a business, using the right image sizes is key to maintaining a visually appealing profile that keeps users engaged. For expert help in optimising your social media presence, check out a top-rated social media agency in Abu Dhabi.

Always upload high-resolution images to prevent blurriness or pixelation. Even though Instagram compresses images, starting with a high-quality picture ensures clarity.

Whether it’s text, products, or faces, keep the important details in the centre of your images. This prevents Instagram’s cropping tool from cutting off vital elements.

Even though Instagram allows different image sizes, sticking to the recommended ratios prevents odd cropping or blank spaces in your posts.

Most Instagram users scroll on their phones, so your images should be designed with mobile screens in mind. Portrait images perform better because they take up more space in the feed.

Hashtags help people discover your posts. Try using a mix of popular and niche hashtags. If you’re not sure which ones to use, check out this guide on the best hashtags for Instagram.

Keeping a consistent aesthetic and format makes your Instagram page look more professional and appealing. This is especially important for brands and influencers looking to grow Instagram followers organically.

Instagram is a powerful platform, and using the right image sizes is crucial for making your content look professional and engaging. Whether you’re posting a single image, a carousel, a Reel, or an ad, following the recommended Instagram post size ensures that your visuals look great across all devices.
By using the best dimensions, creating eye-catching content, and following Instagram’s latest updates, you can improve your engagement and grow your presence online. Happy posting!