I cam across two websites that I can recommend that you can check the site speed of your website. I often check mine there because it is true that if a website loads longer than usual, you will lose some of your visitors.
This is the first one that I could recommend:
Ping domain tester displays details, that includes the time it takes to get a control packet from the remote host. High values of packet loss and reaction time indicate low connection performances, while low response time means faster connection and more reliable. Site speed checker shows the duration of a given site. This value can be used for viewing how long a site takes to load.
Is your site fast enough? Find out how fast your website is. If too slow, possibly you should to optimize webpage. You can compare your site speed with the websites of your competitors.
It is expected that if a webpage doesn’t load within 6-9 seconds you will lose a third of your visitors. So if your site speed is slower than that probably you should improve your design, website configuration or just move to a faster server.
You can check the first one HERE.
And the second one, which I really prefer to use. This two website would both give you different results. But in my opinion this is more accurate. 🙂
Check it HERE.
Also, using the second one, you may see them as one of your visitors of your websites, especially if you are using feedjit. It’s one the reasons why I felt it’s more accurate. You can check for yourself.
You may wanna prefer the second one. I suggest every time you make changes to your website like adding plugins or widgets, you may wanna test again the site speed of your site. 🙂
Hope this helps. 🙂