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:img.khan.co.kr/spko/ranking/2900/290035/20200205102957_29003503.jp...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)
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 Apache
Last-Modified Wed, 05 Feb 2020 01:29:47 GMT
ETag 10a1a-59dca178378c0
Accept-Ranges bytes
Content-Length 68122
Content-Type image/jpeg
Cache-Control max-age=228353
Expires Sat, 30 May 2020 06:27:19 GMT
Date Wed, 27 May 2020 15:01:26 GMT
Connection keep-alive

Load Info

page size68122
load time (s)4.406081
redirect count0
speed download15460
server IP23.62.99.25


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