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.grouponcdn.com/sls/3TjKpPSfgLrBmCRNCa8iah3xTDn/gcx-womens-clothing-shoes-and-accessories-335x440/v1/q7...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)

Header

HTTP/1.1 200 OK
Server nginx/1.12.2
Content-Type image/jpeg
Content-Length 12001
Last-Modified Wed, 22 Aug 2018 20:45:15 GMT
ETag 1e58d3abdecb91e7d39587d6765935ba
Cache-Control public, max-age=2592000
Expires Sat, 22 May 2021 15:40:45 GMT
Date Thu, 22 Apr 2021 15:40:45 GMT
Connection keep-alive
Access-Control-Allow-Origin *

Load Info

page size12001
load time (s)0.249134
redirect count0
speed download48170
server IP104.80.20.162


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