# url An object that contains URLs for the image assets in multiple resolutions. ``` url?: ImageDelegate | ImageHashObject | ImageSource | Promise; ``` ## Discussion This property is an object literal containing absolute or relative URLs to standard, 2×, and 3× Retina assets. MapKit JS requires at least one image URL. ```javascript { url: { 1: "example.png", 2: "example_2x.png", 3: "example_3x.png" } } ``` If you choose not to provide standard and Retina resolution assets, you have two options: - Set “1” to a URL to a standard resolution image. This results in blurry images on Retina displays. - Set “1” to a URL to a Retina image. Set the size to the desired size. This results in crisp images on Retina displays and good images on standard displays, but it’s less optimal than custom, pixel-fitted images. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)