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.oreillynet.com/images/people/weblogs/tracey_pilone.jpg redirected to: archive.oreilly.com/images/people/weblogs/tracey_pilone.jp...
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/1.1 301 Moved Permanently
Date Tue, 23 Jan 2018 05:46:50 GMT
Server Apache
Location htt???/archive.oreilly.com/images/people/weblogs/tracey_pilone.jpg
Cache-Control max-age=2592000
Expires Thu, 22 Feb 2018 05:46:50 GMT
Content-Type text/html; charset=iso-8859-1
HTTP/1.1 200 OK
Server Apache
Last-Modified Fri, 30 Jan 2009 18:59:50 GMT
Accept-Ranges bytes
Content-Length 2371
Content-Type image/jpeg
Cache-Control max-age=14400
Expires Tue, 23 Jan 2018 09:46:51 GMT
Date Tue, 23 Jan 2018 05:46:51 GMT
Connection keep-alive

Load Info

page size2371
load time (s)1.473666
redirect count1
speed download0
server IP92.122.122.136


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