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/1268649566901088256/pu/img/CzOvwtRmrx9nKxto.jpg?name=ori...
URL does not point to a web page (html/xhtml) or read error or page not found. (404)

Header

HTTP/1.1 404 Not Found
Access-Control-Allow-Origin *
Access-Control-Expose-Headers Content-Length
Cache-Control max-age=86400, must-revalidate
Content-Length 0
Server tsa_a
x-connection-hash f67d4367fd4f8433870fddbb93dae518
x-response-time 9
Date Tue, 29 Sep 2020 16:32:23 GMT
Connection keep-alive
X-Cache MISS
X-Client-Network EIP
X-TW-CDN ak

Load Info

load time (s)0.382024
redirect count0
speed download0
server IP23.1.106.237


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