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:weblettres.net/odysseus/images/couv.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
Date Fri, 20 Apr 2018 03:28:21 GMT
Server Apache
Last-Modified Thu, 21 Mar 2013 12:58:15 GMT
ETag 26d5de-4001-4d86ee44b87c0
Accept-Ranges bytes
Content-Length 16385
X-XSS-Protection 1; mode=block
X-Content-Type-Options nosniff
X-Frame-Options ALLOW-FROM htt???/www.pearltrees.com/
X-Content-Security-Policy allow self ;
Content-Type image/jpeg

Load Info

page size16385
load time (s)2.512374
redirect count0
speed download0
server IP62.210.116.116


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