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/2pw5tevLnAVZfRyZ2izH9otR2iU5/gcx-auto-and-home-improvement-335x323/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
Last-Modified Wed, 22 Aug 2018 20:03:34 GMT
ETag 50ba035e1f95b1181cb450d7363e1453
Server nginx/1.12.2
Content-Type image/jpeg
Content-Length 9079
Cache-Control public, max-age=706789
Expires Wed, 28 Apr 2021 01:17:55 GMT
Date Mon, 19 Apr 2021 20:58:06 GMT
Connection keep-alive
Access-Control-Allow-Origin *

Load Info

page size9079
load time (s)0.148832
redirect count0
speed download61001
server IP104.80.20.162


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