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-s/04/9d/1b/ce/the-pillows-were-stained.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
Content-Type image/jpeg
ETag 521bee176495e7952b9a60b2172fc760
Last-Modified Mon, 01 Jun 2015 03:59:17 GMT
Cache-Control max-age=2592000
X-Media-CDN 426428151
X-Media-CDN-Cache PASS
X-Media-CDN-Cache-Hits 0
Access-Control-Allow-Origin *
Timing-Allow-Origin htt????/www.tripadvisor.com
Via 1.1 varnish
Fastly-Debug-Digest b3acbb8dcc4b7f6a60334f788990548fe78c0ed1101dbd752f43ca7e52b5b393
Content-Length 23048
Accept-Ranges bytes
Date Wed, 17 Oct 2018 03:15:06 GMT
Via 1.1 varnish
Age 1635017
Connection keep-alive
X-Served-By cache-iad2124-IAD, cache-cdg20724-CDG
X-Cache HIT, MISS
X-Cache-Hits 1, 0
X-Timer S1539746106.102101,VS0,VE84

Load Info

page size23048
load time (s)2.511653
redirect count0
speed download0
server IP151.101.122.38


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