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:www.raymarine.com/uploadedImages/Blog/Raymarine_Blog/DigitalSwitching-MFD.jpg?n=146...
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
Accept-Ranges bytes
Cache-Control max-age=600
Content-Type image/jpeg
Date Sun, 25 Feb 2018 07:21:18 GMT
Expires Sun, 25 Feb 2018 07:31:19 GMT
Last-Modified Tue, 19 Dec 2017 16:37:26 GMT
Server Microsoft-IIS/7.5
X-AspNet-Version 4.0.30319
X-Cache HIT
X-Powered-By ASP.NET
Content-Length 223348

Load Info

page size223348
load time (s)3.858986
redirect count0
speed download0
server IP93.184.220.20


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