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/2018/11/2_201811302203361TtMF.jp...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)
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 Sat, 30 May 2020 21:57:14 GMT
Server Apache/2.2.3 (CentOS)
Last-Modified Fri, 30 Nov 2018 14:03:36 GMT
ETag 2a68aee-21317-43ed3e00
Accept-Ranges bytes
Content-Length 135959
Connection close
Content-Type image/jpeg

Load Info

page size135959
load time (s)2.991332
redirect count0
speed download45450
server IP112.121.178.133


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