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:umlonline.cn/attachments/2019/03/2_2019032012213416ENW.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
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Date Sun, 25 Aug 2019 05:34:18 GMT
Server Apache/2.2.3 (CentOS)
Last-Modified Wed, 20 Mar 2019 04:21:34 GMT
ETag 2e8899b-2fe46-f4f50f80
Accept-Ranges bytes
Content-Length 196166
Connection close
Content-Type image/jpeg

Load Info

page size196166
load time (s)1.7105
redirect count0
speed download0
server IP112.121.178.133


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