[firasd]

Couple things I found while optimizing a particular WordPress site

1) https://www.webpagetest.org for analyzing loading times

2) a3 lazy load for lazy-loading images: https://wordpress.org/plugins/a3-lazy-load/

3) autoptimize for combining multiple CSS files: https://wordpress.org/plugins/autoptimize/

More description of what we did at my write-up here: https://hackernoon.com/dont-brake-for-fonts-3-web-performanc...

[poxrud]

Don't forget caching. A plugin such as w3 total cache or wp fastest cache (my current favourite) will greatly improve your load times.

In my experience the biggest issue with with slow load times are people uploading large unoptimized images. Things like multiple css/js files, unnessary plugins and framework are nothing compared to people using uncompressed large images. Use a plugin, ImageOptim or cloudinary.