Three Proven Ways To Speed up Website!

1. Merge CSS Files - If Too many Small External CSS Files present try to merge them.

2. Remove Unused CSS - Be Careful with this, It's hard to find which part of CSS is applied on page and which is not for it you can try purify CSS a online tool.

3. Compress Images - This is the easiest way to speed up website. For it you can try cloudniry a online tool to find out large images on whole website and it also allows to download their compressed formats.

I'm also on LinkedIn @deepakparmardp