Nowadays fast & optimized website is must, so we would like to represent some optimization tips below which can optimize your overall website speed:
Enable gZIP compression
The easiest way to enable the gZIP compression for your images, CSS and JS files is to add these lines to your .htaccess file in the root WordPress folder:
Content Delivery Network
You can use a CDN to further speed up your website. You can use the CDN to deliver static files of your website like CSS, JS, Images & Font files. There are many CDN hosting providers available in the market but we would recommend MaxCDN or CloudFlare.
Fast Web Hosting Servers
Website speed depends on your Web Hosting Servers also, so it is recommended that you choose a Hosting Company/Server that provides a reliable & a fast hosting service. You can refer some recommended hosting Services here: http://themeforest.net/get_hosting
Compared to the potential hassles that can be encountered when implementing the rule above, the application of this rule is very easy. You just need to add the following to your .htaccess file: FileETags none
Note that this rule applies to sites that are in a server farm. If you’re using a shared host, you could skip this step, but we recommend that you do it regardless.
Optimize your images
Yahoo! has an image optimizer called Smush.it that will drastically reduce the file size of an image, while not reducing quality. However, if you are like us, doing this to every image would be beyond a pain, and incredibly time consuming.
Fortunately, there is an amazing, free plugin called WP-Smush It which will do this process to all of your images automatically, as you are uploading them. No reason not to install this one.
Use an effective caching plugin
WordPress plugins are obviously quite useful, but some of the best fall under the caching category, as they drastically improve page loads time, and best of all, all of them on wordpress.org are free and easy to use.
By far our favorite, bar none, is W3 Total Cache. We recommend or use this plugin, it has all of the features you need and is extremely easy to install and use. Simply install and activate, and see your page load faster as elements are cached.
Optimize your WordPress database
You can simply use the WP-Optimize plugin, which is recommended.
This plugin lets you do just one simple task: optimize your database (spam, post revisions, drafts, tables, etc.) to reduce their overhead.
You can also use the WP-DB Manager plugin, which can schedule dates for database optimization.
Leverage browser caching
Leveraging the browser caching means that you can specify for how long your visitors’ browsers should cache your images, CSS, JS and flash files. However, if any of those resources is set, your server will notify the visitors browser and the cached content will be replaced with the new one. You can add the lines below to your .htaccess file in order to enable this technique.
Delete not required plugins
Review your plugins page and disable / delete all the plugins which are not in use, so those plugin specific JS/CSS or any other files will not be loaded and that will reduce page load time as well as decrease the chances of plugin / theme conflicts.
Change Global settings For Slider Revolution
For more site speed optimisation, you need to set global settings to manually. for that go to admin panel > Slider Revolution > Global setting.
Once you navigate to Global setting, click on “off” as include library globally turn “on” by default. You also need to set another settings of Slider Revolution to avoid two times Google font. For that Go to Admin Panel > Slider Revolution > Global settings > Fonts and select “Disable, Load on your own from Enable Google font download section. To know more, see below image.