You can simply click on the upload your 4k image on Erase.bg and remove the background.

The professional have designed Erase.bg as a dedicated solution to remove or edit an image's background in just a few seconds using AI. As compared to other background removal and editing tools, consuming a lot of time and requiring technical skills. Erase.bg is user-friendly, simple, and provides quality results to potential creators. It works on three simple steps on both website as well as its mobile app:
Step 1: Upload– Upload a png, jpg, jpeg, webp or heic image and wait till you receive a background removed image. It’ll not take more than 3-5 seconds
Step 2: Edit– On the top right corner of the transformed image, you’ll see an edit button. Use that button option to explore a variety of themed backgrounds or solid colors to match your object of interest.
Step 3: Download– Once satisfied, download the transformed image and use it wherever you require.

Erase.bg is an AI-powered tool that automatically removes image backgrounds in a matter of seconds. With our bulk AI design tools, we help people, agencies, and e-commerce businesses all over the world enhance their productivity and revenue.