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:b.hatena.ne.jp/entry/image/http://natgeo.nikkeibp.co.jp/atcl/news/18/021600072/ redirected to: cdn-ak.b.st-hatena.com/images/users/gif/normal/00000.gi...
site title:

Header

HTTP/1.1 302 Found
Server nginx
Date Thu, 20 Sep 2018 21:13:09 GMT
Content-Length 0
Connection keep-alive
Cache-Control public, max-age=3600, s-maxage=3600
Location htt????/cdn-ak.b.st-hatena.com/images/users/gif/normal/00000.gif
X-Varnish 17118338 17118339
Age 0
Via 1.1 varnish-v4
X-Cache MISS

Load Info

load time (s)7.052826
redirect count1
speed download0
server IP59.106.194.17


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