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.st-hatena.com/images/entry-button/button-only.gi...
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
Content-Type image/gif
Content-Length 254
Connection keep-alive
Date Tue, 19 Mar 2019 07:08:48 GMT
Server nginx
Last-Modified Tue, 19 Mar 2019 03:34:15 GMT
ETag 5c906337-fe
Expires Wed, 18 Mar 2020 07:08:47 GMT
Cache-Control max-age=31536000
Accept-Ranges bytes
Age 2857538
X-Cache Hit from cloudfront
Via 1.1 632ee301c4920b52f2463aa9e978c57f.cloudfront.net (CloudFront)
X-Amz-Cf-Id m2NeqdKA9B0cNLaYGFa6M1VObJPGX69YtXhrwE3F9D8NxNHnxXGA3A==

Load Info

page size254
load time (s)1.519237
redirect count0
speed download0
server IP143.204.101.111


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