I have one website which is in wordpress and responsive but not optimized fully. when i check in https://developers.google.com/speed/pagespeed/insights/ then i got to know that my website has only 53 score out of 100. There are number of recommendations but don't know to fix without affecting my website ranking. suggest me. Thanks in advance.
Did you try click on the "Show how to fix" link below the recommendations? It provides you with information of what you can do. Also some of them state to consider minifying your CSS JavaScript and HTML files. You stated you're using Wordpress correct? I believe you can install a plugin to Minify your for you. I've never tested it but check it out here: https://wordpress.org/plugins/bwp-minify/
Choose a good host. ... Start with a solid framework/theme. ... Use an effective caching plugin. ... Use a content delivery network (CDN) ... Optimize images (automatically) ... Optimize your homepage to load quickly. ... Optimize your WordPress database. ... Disable hotlinking and leeching of your content.