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:cdn-ak.b.st-hatena.com/images/v4/public/common/loading@2x.gif?version=f27bed06bc63d4f0928f1af8f744b63204badd1...
site title:
Url ContentGraphics Interchange Format
MIME Type / Internet Media Typeimage/gif
MIME Type image
File Extension.gif
More Details (link to:)Wikipedia: Graphics Interchange Format
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Server nginx
Content-Type image/gif
Content-Length 1289
Last-Modified Thu, 14 Jun 2018 09:12:55 GMT
ETag 5b223197-509
Accept-Ranges bytes
Cache-Control max-age=86380
Expires Sat, 18 Aug 2018 00:03:06 GMT
Date Fri, 17 Aug 2018 00:03:26 GMT
Connection keep-alive

Load Info

page size1289
load time (s)1.710982
redirect count0
speed download0
server IP23.56.185.201


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