How to Resize an Image or Picture for Posting on Instagram

As one of the most popular social media, Instagram has accumulated hundreds of millions active users around the world. According to our research, image post is still the most prevalent type although you can share video stories on Instagram now. However, you may find that many photo posts are distorted or stretched. That is why you should learn our guide carefully, resizing an image for Instagram in various situations and producing attractive post.

Resize Photos for Instagram

Part 1: Current Instagram Image Formats and Sizes

Instagram Sizes

As updates, Instagram now allows you to share several kinds of photo posts. They are working with different photo size rules and we will share them in the table below.

Post type Display image size(px) Aspect ratio Maximum image size(px)
Profile 110 by 110 1:1 180 by 180
Photo post 600 by 600 1:1 1080 by 1080
Horizontal photo post 600 by 400 16:9 1080 by 608
Vertical photo post 480 by 600 4:5 1080 by 1350
Instagram Story 9:16 1080 × 1920
IGTV cover photo 420 by 654 1:1.55 420 by 654
Square ad 640 by 640 1:1 1080 by 1080
Landscape ad 640 by 400 1080 by 566

It is essential to know the exact dimensions of every type of Instagram post in order to avoid photo distortion and stretch. Therefore, the first step to share photos is to resize your photos and images for Instagram.

Instagram supported photo formats include JPG, PNG, JPEG, BMP and non-animated GIF. If you post a picture on Instagram, the social media will convert it into JPG. Therefore, you'd better start with a JPG, which will preserve your photo quality.

Part 2: Best Way to Resize Image for Instagram on PC

Sometimes, you took a photo with your camera or smartphone but found it not good enough. Is there any way to resize a picture for Instagram as well as enhance quality? Aiseesoft Image Upscaler can meet your need.

Key Features of Aiseesoft Image Upscaler

How to Resize a Photo for Instagram on PC

Step 1.
Visit in a browser and click the Upload Photo button to upload the image from your hard drive. Or drag and drop the image into the box directly.
Upload Photo
Step 2.
Decide the measurement above the image and preview the result in real time. It also tells you to dimensions under the picture.
Upscaler Interface
Step 3.
Finally, click on the Save to get the result. Then you can post it to your Instagram account.

Part 3: How to Resize Image for Instagram on iPhone

As a mobile social network, users access Instagram on mobile devices primarily. Resizing an image for Instagram with an app is the easiest choice for mobile-first. We use iPhone as an example to show you to workflow.

Step 1.
Take a photo on your iPhone. Then go to the Photos app, find the photo and open it in full screen mode.
Resize Photo Instagram
Step 2.
Tap the Crop icon and then touch the rectangular icon in the lower right corner.
Step 3.
When prompted, choose a proper aspect ratio for Instagram, such as 4:5, Square, or 9:16.
Step 4.
Then adjust the photo and tap Done to confirm it. Bear in mind that the original photo will be replaced.

Note: When it comes to Android phone, you will need a third-party photo editor app if the built-in Gallery app does not provide crop tool.

Part 4: FAQs about Resizing Image for Instagram

Can I resize a picture for Instagram without cropping it?

It depends on the aspect ratio of your original image. If it matches the Instagram aspect ratio, the photo can be uploaded directly. Otherwise, Instagram will stretch it if you did not crop.

How to stop Instagram from cutting my pictures?

The only way to prevent Instagram from cutting your pictures is to resize them before uploading to your social media account.

Can I crop an Instagram photo after posting?

No, once you post a photo on Instagram, it will be hosted to the server. Every time when you crop the photo, you have to upload it again.


Now, you should learn how to resize an image for Instagram on computer and mobile devices. Firstly, you should master the dimensions of various types of Instagram posts based on our sharing. Then Aiseesoft Image Upscaler can help you resize your photos online and restore low resolution photos easily if you prefer to process photos on computer. Of course, you can resize your photos on your smartphone directly after shooting. If you have other problems relative, please feel free to leave a message below and we will reply on it as soon as possible.

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