AliExpress image processing requirements: image size is 800×800 pixels, format is JPG, PNG or GIF; the main image keeps a pure white background, and the other images are allowed to have a white or near-white background; the image is clear, without obvious noise, color difference or damage; the image size does not exceed 2MB. Tips: optimize the size to ensure the clarity of the image; use a white or near-white background to highlight the product; avoid using watermarks or other distracting elements; use light and shadow to increase the visual impact of the image; use image editing software to improve color, saturation and contrast.