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.editions-hatier.fr/sites/default/files/hatier_logo.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/1.1 200 OK
Date Wed, 22 Nov 2017 21:53:55 GMT
Server Apache
Last-Modified Wed, 07 Mar 2012 08:40:41 GMT
ETag 3938203-cd1-4baa31d4f1440
Accept-Ranges bytes
Content-Length 3281
Cache-Control max-age=1209600
Expires Wed, 06 Dec 2017 21:53:55 GMT
Content-Type image/jpeg

Load Info

page size3281
load time (s)0.052996
redirect count0
speed download0
server IP195.81.225.132


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