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/@images/logo_quadratum.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 Sat, 21 Apr 2018 00:17:01 GMT
Server Apache
Last-Modified Thu, 08 Jun 2017 07:59:01 GMT
ETag 260efb-409b-5516e39c76b16
Accept-Ranges bytes
Content-Length 16539
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 size16539
load time (s)3.513089
redirect count0
speed download0
server IP62.210.116.116


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