Also it improves page speed score in website testing tools like Pingdom, GTmetrix, PageSpeed, Google PageSpeed Insights and YSlow..
When you visit web page, your browser downloads all content of the particular page as well as common static files like css and js files.
Now when you will visit any page of the particular website, it will download unique contains of the page and static files will serve from your browser in this way, it speed up each page of website..
Primary benefit is speeding up website because static files will serve from your browser it saves data of website visitor it also saves bandwidth of website server and decrease load of server.
Open Dashboard of your WordPress website and then add new plugin page here Dashboard > Plugins > Add New..
It's because website can't store files of other website in browser suppose your website is example com then it will unable to store any file of example2.com website.
The developer had previously complain about this problem, and all the support he provided was reinstall plugin without single sorry or telling the user how to fix it, since if you can't access dashboard, you need to fix it via FTP.
Be careful with the plugins you install for your business site, I had meltdown at work thanks to this, because some random developer messed up with his code..
PD changed rating from star to 3, at least the developer seems to care and is trying to provide support... bad effect on my site.
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