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:www2.grouponcdn.com/layout/assets/footer-widget-merchant-works-white-ca1a399ab1.sv...
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
x-amz-id-2 ksVPfb9puY3xes5FkzQ90VDNb0P/Ap0Z+ETg3IQmRUQuAv5gqV01/eu9XCVDfs8o+jf0fHY6aq4=
x-amz-request-id G3QW4PJEH9FHKHSC
Last-Modified Tue, 30 Jul 2019 19:52:03 GMT
ETag ca1a399ab165128ec44d5181c6d5cfc5
Accept-Ranges bytes
Content-Type image/svg+xml
Server AmazonS3
Content-Encoding gzip
Content-Length 1958
Cache-Control public, max-age=884
Date Thu, 22 Apr 2021 14:36:53 GMT
Connection keep-alive
Vary Accept-Encoding
Access-Control-Max-Age 3000
Access-Control-Allow-Methods GET
Access-Control-Allow-Origin *

Load Info

page size1958
load time (s)0.449066
redirect count0
speed download4360
server IP92.122.202.168

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