In all file upload fields in the Admin Dashboard, the file size is displayed. For images in formats like JPG, PNG, BMP, etc., a button for compressing the file size is also provided in the upload field.
Click on the button at the bottom right in the upload field, and your image will be compressed and optimized without significantly affecting the quality. Compression can only be performed once. After successful optimization, you will see a corresponding reduction in the file size, and the button's icon will change to a checkmark.
For further recommendations regarding images, you can refer to the article "Is there a recommendation for uploading images to ovos play?"