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.haifa.ac.il/images/form_envelope.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
Content-Length 1426
Content-Type image/jpeg
Last-Modified Mon, 02 Jan 2017 12:58:42 GMT
Accept-Ranges bytes
ETag 16a5e3f1f764d21:0
Date Wed, 21 Feb 2018 02:52:17 GMT
Set-Cookie TS0194f764=015c0b920f3144f8f7a7f1de44a26e7bc142314983fc764029c90879edd3ff65ca269f656b3446e4603a48464ce953be6936159156; Path=/

Load Info

page size1426
load time (s)0.225855
redirect count0
speed download0
server IP132.74.189.243


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