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:olimpiada.ru/files/m_journal_per/7/training-brain.sv...
Url ContentScalable Vector Graphics (SVG)
MIME Type / Internet Media Typeimage/svg+xml
MIME Type image
File Extension.svg
More Details (link to:)Wikipedia: SVG
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Server nginx/1.12.2
Date Mon, 22 Jan 2018 22:12:47 GMT
Content-Type image/svg+xml
Content-Length 2841
Connection keep-alive
Last-Modified Mon, 25 Dec 2017 20:16:39 GMT
ETag b19-5612fd80b6c2b
Accept-Ranges bytes
X-Host olimpiada.ru

Load Info

page size2841
load time (s)0.135089
redirect count0
speed download0
server IP185.30.228.135


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