image cache service 图床 防盗链 referrer meta 防下载
图床
https://github.com/weserv/images
meta & referrer
demo
<img src="https://s4.51cto.com/images/blog/202108/03/056666bf9ae5a67126333bfecd94f16d.jpeg?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=" alt="">
防盗链 / 防下载
image / video 防盗链策略
refs
https://developer.mozilla.org/en-US/docs/Web/HTML/Element/meta
https://wiki.whatwg.org/wiki/Meta_referrer
https://www.freebuf.com/news/57497.html
https://blog.mythsman.com/post/5d2c153067f841464434a42a/