The size of the featured image for GeneratePress depends on the layout and design of your website. However, in general, it’s recommended to use images that are at least 1200 pixels wide and 600 pixels tall for best results. These dimensions will ensure that the images look sharp and clear on all devices, including high-resolution screens.
It’s also important to note that the file size of the images should be as small as possible without sacrificing the quality. Large images can slow down a website, so it’s important to optimize them before uploading them to your website. You can use image optimization plugins like WP Smush, ShortPixel, or Kraken.io to reduce the file size of your images without affecting their quality.
It’s worth noting that the dimensions I’ve mentioned are just general suggestions, as the best size for featured images can vary depending on the specific design and layout of your website. It’s recommended to test different image sizes and see which one works best for your website.