PNG and JPG supported. The maximum and recommended size for screenshots is 1280x800 pixels. 640x400 pixels is a good alternative if you only have smaller images. Having screenshots in your listing page greatly increases its chances of being installed and being featured in the homepage.
支持 PNG 和 JPG。屏幕截图的尺寸最大且建议为 1280x800 像素。如果您只有较小的图像，640x400 像素也不错。在您的列表页面中放上屏幕截图可以大大增加其安装量和在主页中显示的机会。