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:media-cdn.tripadvisor.com/media/photo-l/0e/f6/df/f6/torn-and-dirty-bedsheets.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
Accept-Ranges bytes
Access-Control-Allow-Origin *
Age 0
Cache-Control max-age=2592000
Content-Type image/jpeg
Date Sat, 23 Jun 2018 15:42:54 GMT
Etag 269537cfc531379160509d26e28ada1b
Last-Modified Fri, 14 Apr 2017 08:50:23 GMT
Server ECAcc (dcc/434E)
Timing-Allow-Origin htt????/www.tripadvisor.com
X-Media-CDN 124595195
X-Media-CDN-Cache PASS
X-Media-CDN-Cache-Hits 0
Content-Length 6519

Load Info

page size6519
load time (s)0.22854
redirect count0
speed download0
server IP68.232.34.11


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