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:pbs.twimg.com/ext_tw_video_thumb/1247901642210435077/pu/img/wW5sSvVjye1rDHuO.jpg?name=smal...
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
Accept-Ranges bytes
access-control-allow-origin *
access-control-expose-headers Content-Length
Age 206843
cache-control max-age=604800, must-revalidate
Content-Type image/jpeg
Date Tue, 29 Sep 2020 17:07:07 GMT
Last-Modified Wed, 08 Apr 2020 14:56:31 GMT
Server ECS (pab/6FAA)
strict-transport-security max-age=631138519
surrogate-key ext_tw_video_thumb ext_tw_video_thumb/bucket/9 ext_tw_video_thumb/1247901642210435077
X-Cache HIT
x-connection-hash cc72c19ea2c6251f9b00bca201e79729
x-content-type-options nosniff
x-response-time 115
x-tw-cdn VZ
x-tw-cdn VZ
Content-Length 27020

Load Info

page size27020
load time (s)0.029379
redirect count0
speed download919704
server IP93.184.220.70


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