In marketplaces, proper dimensions for your icons and collection images play a pivotal role in showcasing your digital assets effectively.
The dimensions for the images are dependent on each marketplace's settings. The following guidelines are geared towards the Immutable marketplace.
Our marketplace optimizes for a 1:1 aspect ratio. As a general rule of thumb, we recommend 600x600 pixels, taking into account the typical ~300 pixels per inch (ppi) density of modern devices.
The rendered dimensions in the marketplace are:
Icon: 40x40 pixels
Collection image: 341.2x341.2 pixels
Optimizing for user experience
Our marketplace uses a dynamic resizer that automatically adjusts image sizes to suit different display situations. However, it's important to note that not every marketplace offers this.
While larger intrinsic sizes enhance the viewing experience, file sizes should be optimized for quick loading. As a rule of thumb, aim for a file size below 300KB, which is the largest file size that can be served over 3G networks.
Additionally, consider the advantages of using vector image formats. Vector images allow for resizing without compromising image quality. This adaptability is especially valuable when presenting your assets across various platforms.