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The Perfect OpenSea Banner Size

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With thousands of NFT collections on OpenSea, you’ll need to make your collection look exceptional. Supply vastly outstrips demand in the NFT space. Anyone and their brother can get on OpenSea and create a batch of NFTs. 

This heavy competition means you need to do everything you can to make your collection stand out

Your collection’s or profile page’s banner is the first thing a user sees when they land on your page.

In this guide, I’ll show you a free way you can use to get the most out of your NFT collection banner or your OpenSea profile banner. 

The perfect OpenSea banner size

There are loads of recommendations for the correct banner size on OpenSea. OpenSea officially recommends a banner size of 1400×1400 pixels for your NFT collections. While this works, it doesn’t optimize for specific devices. 

Scores of users have complained that using this size makes their banners look like shit- grainy, cropped, off-center, etc. 

I’m recommending a banner size of 2800×1000. 2800 pixels is the image width, and 1000 pixels is the image height. 

You can take any image you want and use the Simple Image Resizer to get it to 2800 by 1000 pixels. See the step-by-step on the resizer below. 

But to make sure your resize isn’t grainy, try finding an original picture larger than 2800 by 1000 pixels.

OpenSea will compress your image, so the original needs to be quality and have good proportions.

Different devices, different appearance

It helps to think about which of these devices users will view your NFT collection. 

Speaking of which, what devices are people using to look at OpenSea? It depends on the location. For instance, if your target audience is in India, you’ll want to optimize for Android since 70%+ of all web traffic is with Android. If your NFT collection sales target market is North America and Europe, you should optimize your banner size for desktops. Which of these should you do?

What banner size should I use on OpenSea for my collection?

Let me give you a clear answer: you should optimize for desktop. 

Targeting desktop users is why I’m comfortable recommending you use a banner size of 2800 x 1000. It’s OK that this size is bigger than OpenSea’s recommendation.  

This size doesn’t mean that the banner will be optimum for all devices, but it’s the ‘best’ one size fits all. 

Another consideration is to get the most critical, must-see items into the middle or upper-middle of the banner, so everyone across devices sees these items. 

Most users looking to buy NFTs on OpenSea use their desktop browsers, with their browser wallets connected. Only a smaller fraction of users buy and sell NFTs on OpenSea with mobile. Further, the most lucrative customer segments that will buy NFTs from your collection are likely North America and Europe. North American and European users are more likely to be using a desktop. 

Optimizing for Desktop

With a desktop, you won’t need to worry about page load times with image sizing with larger image files. In my realm (product management), we constantly think about load times and run-time complexities. 

People will expect your collection page or profile page to load quickly. Page speed is rarely a problem with desktop and usually always a problem with mobile if we’re talking about web pages. I’ve put a picture below of desktop and mobile’s different page load scores.

The lesson here is that you don’t need to worry about the 2800 x 1000 size being too large

OpenSea is going to use page optimization algorithms to compress your photo anyway. 

How to fix a blurry OpenSea banner

Does the banner you already uploaded look blurry? It’s likely you uploaded a file size that was too small, and OpenSea compressed it further. It helps to err on the side of larger images. 

The specific objects you’ve included in your image might also not have high resolution. 

I recommend you find a larger-sized image and follow the instructions below for the image resizer. 

How to resize your banner with a free image resizer

  • On your computer’s file explorer, select your banner image that needs to be resized. 
  • Under the define the new size of your image using: text, select dimensions. In the two text boxes, enter 2800 x 1000. Then select resize.
  • In the green text box that appears, select the download hypertext. 

Now you can click over to OpenSea and upload this banner image to your collection or profile page. If it’s not perfect, you can always mess around with the pixel sizes until it’s right. 


Please don’t assume that because the banner looks great on your device, it doesn’t look as good on other devices. I’d recommend checking how your banner looks with desktop and a few different browsers if you have the time or energy. 

I hope this has been helpful! OpenSea is a marquis NFT trading platform with millions of users, but I’ve found its light on documentation and how-to’s. As always, be careful out there in this jungle of a space that is NFTs. 

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