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:s2.googleusercontent.com/s2/favicons?domain_url=web-thermometer.d...
Url ContentPortable Network Graphics (PNG)
MIME Type / Internet Media Typeimage/png
MIME Type image
File Extension.png
More Details (link to:)RFC 2083
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Content-Type image/png
Expires Sun, 17 Dec 2017 07:08:30 GMT
Date Sat, 16 Dec 2017 07:08:30 GMT
Cache-Control public, max-age=86400
Content-Security-Policy script-src nonce-avSf+yt/gVHtPzDdv3/83b6krxU unsafe-inline strict-dynamic https: http: unsafe-eval ;object-src none ;base-uri self ;report-uri /_/FaviconHttp/cspreport
Content-Length 395
Server ESF
X-XSS-Protection 1; mode=block
X-Frame-Options SAMEORIGIN
X-Content-Type-Options nosniff

Load Info

page size395
load time (s)0.015062
redirect count0
speed download0
server IP216.58.213.161


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