Greasy Fork is available in English.
Images can be extracted and batch downloaded from most websites. Especially for websites the right click fails or image can not save. Extra features: zip download / auto-enlarge image. See the script description at info page (suitable for chrome/firefox+tampermonkey)
为什么有些图片只能下载二分之一的大小，不能全图下载呀，这个高度应该怎么调节