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.otag.ir/wp-content/uploads/کناف-سقف-20-460x280.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
Cache-Control public, max-age=604800
Expires Sun, 04 Mar 2018 07:40:40 GMT
ETag a5b8-5a12da82-92c46ea13808a89f
Last-Modified Mon, 20 Nov 2017 13:37:06 GMT
Content-Type image/jpeg
Content-Length 42424
Date Sun, 25 Feb 2018 07:40:40 GMT
Accept-Ranges bytes
Server LiteSpeed
Connection Keep-Alive

Load Info

page size42424
load time (s)0.875882
redirect count0
speed download0
server IP5.39.105.112


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