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:kilho.net/wp-content/uploads/2019/03/social-media-3758364_640-463x273.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
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Header

HTTP/1.1 200 OK
Date Sat, 21 Sep 2019 14:12:10 GMT
Server Apache/2.4.41 (codeit) OpenSSL/1.1.1c
Upgrade h2
Connection Upgrade
Last-Modified Tue, 09 Jul 2019 08:18:44 GMT
ETag b349-58d3b35927bf8
Accept-Ranges bytes
Content-Length 45897
Cache-Control max-age=2592000
Expires Mon, 21 Oct 2019 14:12:10 GMT
Access-Control-Allow-Origin *
Content-Type image/jpeg

Load Info

page size45897
load time (s)0.519459
redirect count0
speed download0
server IP52.79.149.119


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