If you are not sure if the website you want to visit is safe, you can check it out here. Enter the address (url) of the website and see the invisible elements, such as a header or meta data.
site address:cet.com.cn/upload/Image/2018/02/12/xwtp/1_20062994894.jp...
site title:
Url ContentJPEG Image
MIME Type / Internet Media Typeimage/jpeg
MIME Type image
File Extension.jpeg, .jpg
More Details (link to:)RFC 1314
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Header

HTTP/1.1 200 OK
Server nginx
Date Fri, 14 Dec 2018 16:48:16 GMT
Content-Type image/jpeg
Content-Length 25247
Connection keep-alive
Last-Modified Mon, 12 Feb 2018 02:28:52 GMT
Accept-Ranges bytes
ETag 935d2939a9a3d31:0
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Load Info

page size25247
load time (s)0.803448
redirect count0
speed download0
server IP103.25.37.171


* all occurrences of the string "http://" have been changed to "htt???/"