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:www.umlonline.org/cmmi/themes/default/images/common/title.gi...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)

Header

HTTP/1.1 200 OK
Date Thu, 28 May 2020 14:59:19 GMT
Server Apache/2.2.3 (CentOS)
Last-Modified Thu, 07 Jan 2010 20:39:59 GMT
ETag 2ab914b-a1e-1317a5c0
Accept-Ranges bytes
Content-Length 2590
Connection close
Content-Type image/gif

Load Info

page size2590
load time (s)1.91769
redirect count0
speed download1350
server IP112.121.178.133


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