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/media/DJIukNvW4AAE3uv.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
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
access-control-allow-origin *
access-control-expose-headers Content-Length
cache-control max-age=604800, must-revalidate
Content-Type image/jpeg
date Sun, 16 Dec 2018 03:56:26 GMT
last-modified Thu, 07 Sep 2017 16:56:25 GMT
server ECS (ams/49BB)
surrogate-key media media/bucket/5 media/905837674753351680
X-Cache MISS
x-connection-hash 0f3938a0e42c91da5735164d2601515b
x-content-type-options nosniff
x-response-time 441
Content-Length 30440

Load Info

page size30440
load time (s)0.205023
redirect count0
speed download0
server IP93.184.220.70


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