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:web.mit.edu/files/images/201809/MIT-Tang-SL.jp...
site title:
Url ContentJPEG Image
MIME Type / Internet Media Typeimage/jpeg
MIME Type image
File Extension.jpeg, .jpg
More Details (link to:)RFC 1314
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HTTP/1.1 200 OK
Server Apache
Last-Modified Sun, 16 Sep 2018 04:00:31 GMT
ETag 10e895c0-25dae-5b9dd55f
Accept-Ranges bytes
Content-Length 155054
X-Cnection close
Content-Type image/jpeg
Date Thu, 23 May 2019 07:00:13 GMT
Connection keep-alive

Load Info

page size155054
load time (s)0.453297
redirect count0
speed download0
server IP104.109.79.114

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