If you use a CDN service, it will save the static content of your site on their servers and serve the files to a user from a server, which is closer to the visitor, thereby dramatically reducing the load time.
So, if you want to speed up your WordPress site, you must use a quality CDN service.
However, buying a paid CDN service along with hosting is not possible for all WordPress users because there are a number of newbie bloggers who use WordPress as their blogging platform and don't make enough money to pay for such a service.
But that doesn't mean you can't use a CDN service for your site; there are a number of top quality free CDN services which will help you to speed up your WordPress site.
CloudFlare is by far the most popular free CDN service that you can easily use for your WordPress site. When you use their service, your website's traffic will be routed through its global network, which is powered by 34 data centers around the world.
Along with speeding up your site, CloudFlare will create a protective layer around your site and make sure that your site is safe from possible attacks.
The best part is that they have a really easy to use WordPress plugin which will enable you to use their platform with ease.
Photon is a CDN service for sites hosted on WordPress.com and is available for theself-hosted WordPress sites as a part of the Jetpack plugin.
Images are the component of websites that take the longest to load. Once you start using Photon, your images will be served through WordPress.Com's global service which will reduce the loading time of your site exponentially.
The service is extremely easy to use; all you need to do is to visit your Jetpack dashboard, click the Activate button for Photon, and you are good to go.
Incapsula CDN service is another well-known content delivery network that offers a free plan. Along with a CDN service, they also offer you a spam protection service to protect your site from spam bots, access control, login protection, etc. for free.
Their free plan is good enough for personal bloggers and as your site starts growing, you can move to a paid plan if you wish to. Don't forget to use their WordPress plugin that will help you to get correct IP Address information for comments posted to your site.
Free CDN services are a great option for small and medium size websites that get less than 100k unique visits, and you can always shift to a paid CDN service as your site starts growing further and getting more traffic.
Site speed is extremely important these days because search engines like Google use loading time as one of the important parameters for search algorithms.
If you want to go for a free CDN service, CloudFlare is undoubtedly the best option for you.
Share your experience with CDN services by using the comment section below, and if you know of any more free CDN services, please mention them here.