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:ebook-assets.dmm.co.jp/digital/e-book/b472abnen00276/b472abnen00276pl.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
Server openresty
Date Sun, 21 Jul 2019 21:37:06 GMT
Content-Type image/jpeg
Content-Length 76711
Connection keep-alive
Last-Modified Thu, 28 Feb 2019 08:16:18 GMT
Expires Sun, 28 Jul 2019 21:37:06 GMT
Cache-Control max-age=604800
X-Cache-Status HIT
Accept-Ranges bytes

Load Info

page size76711
load time (s)0.753685
redirect count0
speed download0
server IP43.255.41.223


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