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/themes/otag-V3/images/instagram-header.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
Cache-Control public, max-age=604800
Expires Tue, 29 May 2018 19:49:31 GMT
ETag 3bcf-575dd2d8-918be97c3337e3df
Last-Modified Sun, 12 Jun 2016 21:23:36 GMT
Content-Type image/jpeg
Content-Length 15311
Date Tue, 22 May 2018 19:49:31 GMT
Accept-Ranges bytes
Server LiteSpeed
Connection Keep-Alive

Load Info

page size15311
load time (s)0.259012
redirect count0
speed download0
server IP5.39.105.112


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