Optimize WordPress
If you think your website takes too much time to load maybe you should.
    1.
    Install a Cache Plugin for WordPress. We recommend W3 Total Cache.
    2.
    Install an Image Compress Plugin. We recommend WP Smush It.​
    3.
    Install a Database Optimizer Plugin We recommend WP Optimize​
    4.
    Reduce the number of posts on the page
    5.
    Reduce the number of unnecessary plugins.
    6.
    Use more icons and less images.
To install plugin Autoptimize , please go to plugin and find plugin "Autoptimize"
Next go to Dashboard ->> Settings ->> Autoptimize
Set up option main like :
Option Extra
Plugin Cache to delete all caches of theme.
Then install plugin cache :
Next go to Dashboard ->> Settings ->> Cache
Choose option caching on to turn on plugin :
Then you can click button test cache to check it​
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