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)
< Feedback on Image Downloader
留下具体网址吧，每个网站的样式都是不一样的，个别网站的css可能会导致你说的这种现象
全选这个按键不能用，只是单纯的字体。
高度和宽度选取不太会用，输入数字后不知道怎么确定。