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:api.ning.com:80/files/TYrIe*Afvd8vWsWf0iNPSn2dIfuDUaLKjECA6XMf5Rk9qEUIJ46CjgFLXwiAhPFHZWRN9gLUUyC6UhAGDRn9lvAtsqZSMI8v/2005856148.gif?xgip=%3B183%3B&width=96&height=96&crop=1%3A...
site title:
Url ContentGraphics Interchange Format
MIME Type / Internet Media Typeimage/gif
MIME Type image
File Extension.gif
More Details (link to:)Wikipedia: Graphics Interchange Format
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Header

HTTP/1.1 200 OK
Date Tue, 16 Oct 2018 12:47:51 GMT
Connection Keep-Alive
Accept-Ranges bytes
ETag 1534369179
Cache-Control max-age=86400
Content-Length 9156
Content-Type image/gif; charset=UTF-8
Last-Modified Wed, 15 Aug 2018 21:39:39 GMT
X-HW 1539694071.dop005.pa1.t,1539694071.cds015.pa1.c

Load Info

page size9156
load time (s)0.013381
redirect count0
speed download0
server IP205.185.216.42


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