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:k12.sd.us/images/tabs.gi...
Url ContentGraphics Interchange Format
MIME Type / Internet Media Typeimage/gif
MIME Type image
File Extension.gif
More Details (link to:)Wikipedia: Graphics Interchange Format
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Content-Length 2878
Content-Type image/gif
Last-Modified Fri, 27 Jun 2014 19:15:36 GMT
Accept-Ranges bytes
ETag 3463e72c3c92cf1:0
Server Microsoft-IIS/8.5
Date Tue, 20 Feb 2018 00:05:35 GMT
Set-Cookie BIGipServerWeb_www.k12.sd.us_pool=3744772302.20480.0000; path=/; Httponly

Load Info

page size2878
load time (s)0.393684
redirect count0
speed download0
server IP206.176.53.70


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